As insurance in the event Peyton Manning isn't healthy enough to start the season opener, the Indianapolis Colts reached an agreement with veteran quarterback Kerry Collins. Colts sources told ESPN senior NFL analyst Chris Mortensen that although Manning is making some progress since having neck surgery and has maintained optimism, the team's hierarchy does not believe he will be ready when Indianapolis opens the season Sept. 11 at Houston. Polian had been talking to Collins, who had announced his retirement earlier this year, for several days before Collins agreed Tuesday night after getting the green light from his wife. Collins said he has been given no indication that Manning won't play at Houston. "Hopefully, Peyton will be back, but if he's not maybe I can be one of the guys that can help this ball club," Collins said in a conference call with reporters Wednesday night. "The biggest draw for me coming here was just being with a team that I have a lot of respect for and a lot of history with, and really to be with a great team and play with one of greatest quarterbacks of all time." Read more: http://espn.go.com/nfl/story/_/id/6...ry-collins-sources-doubt-peyton-manning-ready