San Francisco 49ers: Darelle Revis

Free agency starts at 4 p.m. ET (1 p.m. PT) Tuesday.

It is clear the San Francisco 49ers' plan of attack will be to sign their own top free agents. They secured their top free-agent priority, receiver Anquan Boldin, last week. Their other targets are safety Donte Whitner, cornerback Tarell Brown and kicker Phil Dawson. Dawson and Brown both may get quick action on the open market.

If any of these players leave, the 49ers will likely have to go find a replacement in some form. Let’s take a look at who they may be:

Safety

Possible free-agent options: Mike Mitchell (Panthers), Malcolm Jenkins (Saints), James Ihedigbo (Ravens).

Summary: The free-agent market is thin, and, in my opinion, signing Whitner is, by far, the best option. If not, one of the above-mentioned players could be a suitable, but not equal signing. If Whitner’s market doesn’t get crazy, the 49ers need to try to keep him. In-house potential replacements are C.J. Spillman and Craig Dahl, but neither are considered top options.

Cornerback

Possible free-agent options: Nolan Carroll (Dolphins), Antonio Cromartie (released by Jets), Champ Bailey (released by Broncos), Walter Thurmond (Seahawks), Asante Samuel (released by Falcons), Antoine Cason (Cardinals), Charles Tillman (Bears), Captain Munnerlyn (Panthers).

Summary: Replacing Brown may be easier than replacing Whitner. There are a ton of decent cornerbacks. Carroll is one of the players the 49ers have checked in on. If the 49ers lose Brown, they could wait out the market and get a decent player or two here. A wild card could be Darrelle Revis, who reportedly either is going to be traded or released, as soon as this week, by Tampa Bay. He will likely be pricey but if something crazy happens, perhaps the 49ers could get involved.

Kicker

Possible free-agent options: Steven Hauschka (Seahawks), Adam Vinatieri (Colts), Josh Brown (Giants), Dan Carpenter (Bills).

Summary: There are some decent kickers available, but I think Dawson is the best fit and I expect him to be back. If not, any of these kickers could be the fix. Just a guess, but I don’t think it gets to that point.

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