Manning has started 40 of 61 games played during his four seasons with the Bears. he has six interceptions, six forced fumbles and three fumble recoveries.
A valuable special teams contributor, Manning has 11 kickoff returns for 40 or more yards over the past two seasons, which leads the NFL. He averaged a league-high 29.7 yards per kickoff return (1,070 yards on 36 returns) in 2008.
The Bears on Wednesday also signed defensive end Corey Wootton, a fourth-round pick out of Northwestern, to a four-year deal and waived former Wildcats quarterback Brett Basanez.