CHARLOTTE, N.C. (AP) -The Carolina Panthers added depth on their defensive line by agreeing to a one-year deal with free agent Darwin Walker.

Walker's agent, Al Irby, confirmed the deal Monday. The Chicago Bears let Walker go in February.

Walker played in 11 games with seven starts in an injury-plagued season with Chicago in 2007. He finished with 17 tackles and one sack. Before that, Walker was a five-year starter in Philadelphia.

The Panthers have little depth at defensive tackle after trading Kris Jenkins in the offseason. Sixth-round pick Nick Hayden of Louisville was the only defensive linemen the Panthers took in last weekend's draft.