Posted by ESPN.com's Adam Rittenberg
More to come on these personnel issues after the Big Ten coaches' call later today, but a few interesting items on the depth charts released Monday.
Free safety Nick Polk is not listed on Indiana's depth chart for Minnesota, possibly indicating he'll miss another game with a knee injury. Polk has an interception, a forced fumble and a fumble recovery this season. Strong safety Austin Thomas is listed as the starter after missing the last two games with a leg injury. Brandon Mosley started in place of Thomas against Michigan State, but Jerimy Finch played a lot.
Ohio State true freshman Mike Brewster has made a good impression so far and remains the co-starter at center even though Steve Rehring could be back from a foot injury. Brewster and junior Jim Cordle are listed as co-starters at center, while Cordle and Rehring are co-starters at left guard. The Cleveland Plain Dealer's Doug Lesmerises thinks Ohio State might move Cordle to right guard to keep him on the field. The Buckeyes also have co-starters at one cornerback spot (Chimdi Chekwa and Donald Washington) and defensive tackle (Doug Worthington and Nader Abdallah).
Penn State wide receiver Jordan Norwood is listed as probable for the Purdue game after sitting out against Illinois with a hamstring injury. Quarterback Daryll Clark said Norwood did some light jogging at Monday's practice. "It's a day-to-day thing if he's going to play or not," Clark said. "He tweaked a hamstring really good."
Physically gifted junior tight end Carson Butler has dropped to third string on Michigan's depth chart. Butler, who was ejected from a Sept. 13 game at Notre Dame for throwing a punch, dressed for last Saturday's game against Wisconsin but didn't play. Fifth-year senior Mike Massey and true freshman Kevin Koger, who caught a touchdown pass against the Badgers, are ahead of Butler. Head coach Rich Rodriguez called the move a coach's decision.
Linebacker Jason Werner, who recently underwent minor back surgery, isn't listed on Purdue's depth chart for Penn State. Frank Duong and Dwight Mclean are listed as co-starters at strong safety.