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Chicago Bears

Key additions: Running back Michael Bush, linebacker/special teams Blake Costanzo, quarterback Jason Campbell, receiver Brandon Marshall (trade), receiver Devin Thomas, receiver/returner Eric Weems.

Key losses: Running back Marion Barber (retired), cornerback Zack Bowman, cornerback Corey Graham.

Come on back: Lost in the shuffle of the Marshall trade were the return of three free agents who should play key roles in 2012. Tight end Kellen Davis figures to get an expanded role in offensive coordinator Mike Tice's scheme, especially as a receiver. Cornerback Tim Jennings should retain his starting role opposite Charles Tillman, with D.J. Moore in the nickel. And safety Craig Steltz will provide reliable depth at safety and will be one of the Bears' special teams leaders after the departure of Graham and Bowman.

What's next: There is no urgency yet, but the Bears will need to make peace with tailback Matt Forte at some point before the summer. Forte isn't happy that he's been made the Bears' franchise player and briefly lost his public composure when Bush signed a deal that guaranteed him about the same amount of money as the franchise tag will pay Forte. It's not a big deal if Forte skips the Bears' offseason program or even misses a few days of training camp, but the Bears will want to find a way to eliminate this issue by early August. Meanwhile, it wouldn't be surprising if the Bears address their offensive line during the draft.

Detroit Lions

Key additions: Defensive end Everette Brown, cornerback Jacob Lacey.

Key losses: Cornerback Eric Wright.

All in the family: With the exception of Wright, the Lions were able to retain the core of their 10-6 team. Among those who re-signed: Tackle Jeff Backus, safety Erik Coleman, defensive end Andre Fluellen, quarterback Shaun Hill and linebacker Stephen Tulloch. And don't forget that receiver Calvin Johnson is locked up for perhaps the rest of his career. He signed a new eight-year contract worth $132 million.

What's next: The Lions appear interested in adding competition at safety, having hosted free agent O.J. Atogwe earlier this month. Adding a safety remains a possibility, if not through free agency, then probably through the draft. And while Backus is re-signed for two years, it wouldn't be surprising if the Lions look for a long-term replacement in the draft.

Green Bay Packers

Key additions: Defensive lineman Daniel Muir, center Jeff Saturday, defensive lineman Anthony Hargrove.

Key losses: Quarterback Matt Flynn, center Scott Wells.

Shocker: The Packers usually do whatever it takes to keep their own players and avoid having to search the free-agent market for other the castoffs of other teams. They started off that way by re-signing tight end Jermichael Finley to a two-year contract, but when they were unable to sign center Scott Wells, they quickly targeted veteran Jeff Saturday and made him their first starting-caliber free-agent signee in five years. General manager Ted Thompson also authorized the acquisition of Hargrove and the pursuit of Dave Tollefson.

What's next: It's not out of the question that the Packers will add a veteran pass-rusher, whether at defensive end or linebacker. Then they'll get back into their comfort zone and start preparing for the draft, where it's reasonable to think they'll use at least one of their 12 picks on a center while also continuing to pursue pass-rushers.

Minnesota Vikings

Key additions: Cornerback Zack Bowman, tight end John Carlson, running back Jerome Felton and offensive lineman Geoff Schwartz.

Key losses: Nose tackle Remi Ayodele (release), guards Anthony Herrera (release) and Steve Hutchinson (release), tight end Jim Kleinsasser (retire), running back Jerome Felton.

Methodical methodology: The Vikings made one big-money signing, bringing in Carlson as a new weapon for quarterback Christian Ponder, and otherwise have spent their offseason getting younger and signing complementary players. General manager Rick Spielman wants to end a cycle of seeking blue-chip players via free agency and instead count on the drafts for his difference-makers.

What's next: One way or the other, the Vikings need to find a deep threat for Ponder. The draft would seem the most likely place for that will happen. They are also midway through a rebuild of the secondary that could use at least one more cornerback and perhaps two safeties.

» AFC Free-Agency Primer: East | West | North | South » NFC: East | West | North | South

Free agency begins Tuesday at 4 p.m. ET

Chicago Bears

Key free agents: Tight end Kellen Davis, running back Matt Forte (franchise), cornerback Corey Graham, quarterback Caleb Hanie, defensive end Israel Idonije, cornerback Tim Jennings, quarterback Josh McCown, safety Brandon Meriweather and receiver Roy Williams.

Where they stand: The Bears will have the most salary-cap space among NFC North teams, upwards of $30 million, and have plenty of potential uses for it. Quarterback Jay Cutler needs more targets in the downfield passing game, whether it's at the receiver or tight end position. And new general manager Phil Emery must start restocking a defense led by four players more than 30 years old: Linebackers Brian Urlacher and Lance Briggs, defensive end Julius Peppers and cornerback Charles Tillman.

What to expect: It's widely believed the Bears will be in the running for free-agent receiver Vincent Jackson. But Jackson's price tag could be steep and no one knows if Emery will prove to be a big spender. It seems likely he will re-sign Davis, and Emery should also save some of his cap space to extend Forte's contract. Secondary receiver targets could include Marques Colston. Bears fans are hoping the team will pursue defensive end Mario Williams, but it's hard to imagine the Bears budgeting for Williams two years after breaking their bank on Peppers.

Detroit Lions

Key free agents: Defensive end Cliff Avril (franchise), left tackle Jeff Backus, safety Chris Harris, quarterback Shaun Hill, linebacker DeAndre Levy (restricted), running back Maurice Morris, running back Kevin Smith, quarterback Drew Stanton, linebacker Stephen Tulloch and cornerback Eric Wright.

Where they stand: The Lions are tight against the salary cap after franchising Avril and aren't likely to be big spenders on the free-agent market. They could relieve the situation by reaching long-term agreements with Avril and/or receiver Calvin Johnson, who has a $22 million cap figure for 2012. Tulloch made a big impact last season after signing a one-year deal, but so far the Lions' attention has turned elsewhere.

What to expect: The Lions' best-case scenario is to keep their 2011 core together without mortgaging their future relative to the salary cap. That would mean getting Tulloch re-signed to preserve the linebacker group they upgraded last season by signing him and veteran Justin Durant, moves that allowed Levy to play on the outside. Hill seems likely to re-sign as Matthew Stafford's backup, while Stanton might test the free-agent waters to see if he has a chance to do better than third on a team's depth chart.

Green Bay Packers

Key free agents: Cornerback Jarrett Bush, quarterback Matt Flynn, running back Ryan Grant and center Scott Wells.

Where they stand: The Packers took care of a big challenge by signing tight end Jermichael Finley to a two-year contract last month. They will let Flynn depart for a possible starting job elsewhere and it appears Grant will test the free-agent market. Discussions with Wells haven't led to an agreement, but the Packers often go to the final moments before reaching a deal. There are no obvious internal replacements for Wells, making his return a priority.

What to expect: The Packers will have some flexibility with the salary cap, but general manager Ted Thompson's aversion to veteran free agency is well known. It's been three years since he signed a veteran unrestricted free agent in the offseason. The Packers have needs at defensive line, outside linebacker and possibly at center if Wells leaves. But let's put it this way: Thompson's strong preference is to find depth and future replacements in the draft, not on other teams' rosters.

Minnesota Vikings

Key free agents: Safety Husain Abdullah, receiver Devin Aromashodu, receiver Greg Camarillo, defensive lineman Fred Evans, defensive lineman Letroy Guion, linebacker E.J. Henderson, linebacker Erin Henderson, safety Tyrell Johnson, quarterback Sage Rosenfels, cornerback Benny Sapp and tight end Visanthe Shiancoe.

Where they stand: The Vikings seem poised for a major roster overhaul in their first offseason since Rick Spielman was promoted to general manager. Players like Shiancoe, E.J. Henderson, Camarillo and Johnson all seem poised to move on. There aren't many positions on the team that appear secure.

What to expect: If the Vikings don't plan to draft USC left tackle Matt Kalil at No. 3 overall next month, the first clue will be if they pursue a free-agent left tackle. That seems unlikely. But they'll need to combine their draft with at least a few veteran free agents if they intend to compete for a playoff spot in 2012. Cornerback could be a point of focus, where Brandon Carr and Cortland Finnegan are among those available. Another could be receiver. The Vikings had major interest in Jackson two years ago.

The NFL's new collective bargaining agreement (CBA) has brought an issue we haven't faced in a number of years: Tight salary-cap situations.

After jumping considerably in the final few years of the old CBA, the league's cap limit isn't expected to rise much, if any, for the 2012 season. That means teams will have roughly $120 million to work with as they assemble the top 51 players on their training camp roster.

Based on the numbers I've been able to dig up, it appears that three of our four NFC North teams are going to be relatively tight against that number, especially considering they need to save room for signing a draft class. All teams must be in compliance when the new league year opens, and free agency begins, on March 13.

The following is how much each team currently has committed to its 2012 cap. Keep in mind that the numbers probably will change between now and March 13 as teams re-sign, re-negotiate and release players from their rosters.

• Chicago Bears: $101.8 million
• Detroit Lions: $122.8 million
• Green Bay Packers: $115.3 million
• Minnesota Vikings: $115.3 million

A few thoughts:

1. We've already discussed the Lions' situation at some length. Simple math tells us they're going to have to adjust some current salaries just to get under $120 million, and the first candidate is receiver Calvin Johnson, who is projected to count about $22 million against the cap alone. As we've noted, four players -- Johnson, quarterback Matthew Stafford, defensive tackle Ndamukong Suh and defensive end Kyle Vanden Bosch -- account for nearly half of their total cap projection.
2. There are tricks available for teams like the Lions who want to keep or re-sign their players in a tight environment. They come with risks and the potential for future problems, but there is always a way to squeeze players into a given year's cap. The new CBA has a provision that allows teams to borrow against future caps, providing another option.
3. One positive bi-product of the Bears' decision to trade for quarterback Jay Cutler in 2009: It relieved them of the cap commitment associated with two first-round draft picks. That's one of the reasons new general manager Phil Emery has some $18 million to work with if he wants to sign veteran free agents and/or use his franchise tag on tailback Matt Forte.
4. The Packers have a number of veterans they want to re-sign, including tight end Jermichael Finley and center Scott Wells. With about $5 million in wiggle room, based on these numbers, they'll need to make some adjustments to fit both players in. As Tom Silverstein of the Milwaukee Journal Sentinel has already suggested, the Packers could carve out some space by either releasing receiver Donald Driver or renegotiating his contract. The same could happen for left tackle Chad Clifton.
5. Still, it should be clear why it seems unlikely that the Packers would place their franchise tag on quarterback Matt Flynn for the purposes of trading him after March 13. Doing so would require a $14 million cap commitment, require more cap maneuvering than would be comfortable and likely exposing either Finley or Wells to the free agent market.

It took longer than expected. Preliminary decisions were questioned. Debates extended into the wee hours. We went through a first draft, then a second and even a third. Countless observers were consulted. It wasn't until I had a full week to mull the 2011 All-NFC North team that I was prepared to make the big reveal.

Via Twitter, @jpberthiaume asked: "Do people really care about these 'teams?'" I guess it's a fair point. I doubt few, if any, of the players listed in the chart wrote a fifth-grade essay about their plans to one day make the All-NFC North team on ESPN.com, even if it was only because the NFC North hadn't yet been formed in those days and ESPN.com was operating out of a Bristol-based closet.

So I'll let you be the judge. This is annually a fun exercise, even if it doesn't lead to a deep understanding of the human condition or even reveal any breakthroughs about the just-completed season. If nothing else, it offers us a blank template to recognize the best-performing players in the division without the hindrance of the politics and reputation.

Some notes on some of the tight decisions, for which I seriously received input from multiple angles:

• One of the fiercest debates came at wide receiver. Everyone agreed that the Detroit Lions' Calvin Johnson deserved one spot, but there was a split about the other two. Did the Green Bay Packers' Greg Jennings, who missed three games because of a knee injury, deserve an automatic bid? And if he did, should the Packers' Jordy Nelson or the Minnesota Vikings' Percy Harvin get the third spot? I thought Jennings' 67 receptions, 949 yards and nine touchdowns in 13 games merited a spot. And ultimately I chose Nelson over Harvin. I realize Harvin caught 87 passes in a punchless offense and added 345 rushing yards to his total, but in the end I couldn't overlook a player who scored more touchdowns (15) than all but four players in the NFL this season. Plus, as Hatterbot pointed out: "Rushing yards don't count in the WR category."

2011 All-NFC North Team

Pos.	Player, Team
OFFENSE
WR	Calvin Johnson (DET)
WR	Greg Jennings (GB)
WR	Jordy Nelson (GB)
LT	Jeff Backus (DET)
LG	Rob Sims (DET)
C	Scott Wells (GB)
RG	Josh Sitton (GB)
RT	Bryan Bulaga (GB)
TE	Jermichael Finley (GB)
QB	Aaron Rodgers (GB)
RB	Matt Forte (CHI)
DEFENSE
DE	Jared Allen (MIN)
DT	Kevin Williams (MIN)
DT	Ndamukong Suh (DET)
DE	Julius Peppers (CHI)
OLB	Clay Matthews (GB)
MLB	Brian Urlacher (CHI)
OLB	Lance Briggs (CHI)
CB	Charles Tillman (CHI)
CB	Charles Woodson (GB)
S-NB	Tramon Williams (GB)
S	Louis Delmas (DET)
SPECIAL TEAMS
PK	Mason Crosby (GB)
P	Tim Mastay (GB)
PR	Devin Hester (CHI)
KR	Percy Harvin (MIN)
ST	Corey Graham (CHI)

• I went with the Lions' Rob Sims at left guard in part on the advice of John McTigue of ESPN Stats & Information, who noted that Sims was the only NFC North left guard to play the position for 16 games this season. Sims also had the best pass-sack ratio (19.7 passes per sack) of the group, based on video study.
• There is no doubt that the Lions' Brandon Pettigrew (83 catches) had a more productive season than the Packers' Jermichael Finley (55). But the Lions often used Pettigrew as a substitute for their punchless running game, and that's why his per-catch average of 9.4 yards was lower than any other tight end with at least 30 catches. According to ESPN Stats & Information, the average pass to Pettigrew this season traveled 6.5 yards in the air. The average pass to Finley traveled 11.4 yards. Finley caught five passes of at least 30 yards. Pettigrew's longest was 27. Both players had their share of drops, combining for a total of 15, but I thought Finley made a bigger impact on his catches than Pettigrew did.
• I really debated the Bears' Julius Peppers and the Lions' Cliff Avril at defensive end. Avril (11.5) had a half-sack more than Peppers (11) and forced twice as many fumbles. But one of the advantages we have on this team is investigating beyond the conventional numbers. Our friends at Pro Football Focus (PFF) credited Peppers with 53 quarterback pressures, the second-highest total in the NFL. Avril ranked No. 8 with 37, but in a close race I chose the maximum number of plays impacted over Avril's slight edge in "playmaking" statistics.
• I used a similar approach in choosing the Vikings' Kevin Williams and the Lions' Ndamukong Suh as my defensive tackles. It's true that the Bears' Henry Melton led the NFC North's defensive tackles with seven pressures, but PFF had Suh with 27 quarterback pressures, an NFL high for an interior lineman. Williams tied for No. 3 with 25. Melton wasn't that far behind at 23, but I also took into account that the Bears nearly benched him for inconsistency at one point in the season. (Coach Lovie Smith in November: "He hasn't showed up as much. Whether teams have adjusted to him or whatever, we need to get more production from him because he's capable of it.") Meanwhile, I thought Packers defensive lineman B.J. Raji took a step backward in 2011. PFF credited him with only 10 stops (the cumulative number of plays made that constitute an offensive failure) in 842 snaps.
• If you want to say I chickened out at linebacker, go ahead. I originally left open the middle and one of the outside spots, but in the end I went with our division standbys: Brian Urlacher and Lance Briggs. For starters, Briggs was one of six non-offensive linemen to play 100 percent of his team's snaps in the NFL this season. There's something to be said for being available to your team. And while I do think that the Packers' Desmond Bishop and the Lions' Stephen Tulloch had good seasons, I couldn't find a statistic or an opinion that convinced me they were better than Urlacher. Someday, there will be turnover among NFC North linebackers. But it didn't happen this season.
• Safety play was poor throughout the NFC North, so I'm not at all ashamed to have chosen a third cornerback to replace one of the safeties on this team. It came down to the Lions' Chris Houston and the Packers' Tramon Williams. Both had their ups and downs in coverage. Houston had five interceptions and two touchdowns in 14 games, while Williams had four interceptions and one touchdown in 15 games. In the end, I chose Williams because I think it was pretty clear he was pushing through a really limiting shoulder injury for much of the first half of the season.
• I chose the Packers' specialists, kicker Mason Crosby and punter Tim Masthay. Crosby converted 24 of 28 kicks, including a 58-yarder, and ranked third in the NFL with 49 touchbacks. Masthay downed a division-high 23 punts inside the 20-yard line despite a division-low 55 punts.
• I mistakenly left off a coverage specialist from our original post. There should be no debating that the Bears' Corey Graham deserves that spot.
• Go ahead. Rip away....

Coming later this week: Some supplementary NFC North awards, including our top coordinators.

LAKE FOREST, Ill. -- The Chicago Bears virtually shut down one of the league's top tight ends in the Dallas Cowboys Jason Witten on Sunday when they held him to five catches and no touchdowns before knocking him out of action with a concussion.

Minus the induction of head trauma, the Bears look to duplicate the feat Monday night when they face Packers tight end Jermichael Finley, who is also considered one of the league's elite pass-catchers at his position. Taking advantage of man-to-man coverage last week against Buffalo, Finley led four Packers scoring drives with four catches (24, 32, 22, and 15 yards) for 103 yards.

"He's a big tight end," Bears linebacker Brian Urlacher said. "He runs well, catches the ball pretty [well]. He's just like [Chargers tight end Antonio] Gates, Witten. They all run well. They all know how to get open. They're all in that same category."

While it's likely the Bears could mix in some man coverage on Finley, don't count on the look to be a regular occurrence. The Bills made that mistake on two of Finley's four receptions. Three of Finley's four receptions came on crossing routes in front of linebackers and safeties.

Luckily for the Bears, they defend a tight end -- Greg Olsen -- every day at practice. Finley currently ranks second on the team and fourth among NFL tight ends with 150 yards receiving on eight catches through the first two games.

Finley trails Indianapolis' Dallas Clark (163), Minnesota's Visanthe Shiancoe (162) and San Francisco's Vernon Davis (151) in receiving yardage for tight ends.

"We play our defense [against Finley] No. 1, and try to get the right matchups with guys in terms of our safeties and our linebackers," Bears defensive coordinator Rod Marinelli said. "It's like playing our offense with Greg. Obviously, he's a tremendous threat like we saw last week with Witten. Every week you're gonna see very talented skill players and we've just got to play our defense and play it correctly."