FILE - In this June 14, 2012 file photo, Chicago Bears wide receiver Johnny Knox passes the ball during the team's NFL football practice in Lake Forest, Ill. On Tuesday, Feb. 12, 2013, the Bears announced they have terminated Knox's contract after he missed this past season recovering from a back injury. Knox had 133 receptions for 2,214 yards from 2009 to 2011 and was a contributor on special teams with 55 kickoff returns for 1,506 yards. (AP Photo/Nam Y. Huh, File)