The Bears terminated the contract of WR Johnny Knox, the team announced Tuesday.
Late in 2011, Knox suffered a severe back injury. He underwent spinal fusion surgery and did not play in 2012, spending the season on the physically-unable-to-perform list.
In three NFL seasons, Knox had 133 catches for 2,214 yards and 12 touchdowns. In 2011, he averaged 19.6 yards per catch.
On Monday, the Bears signed CB LeQuan Lewis, who played in eight games in 2012 — five with the Buccaneers and three with the Cowboys.