Manning is dressed for Saturday's game, but he's unlikely to see any action, baring a possible rep on special teams.
The Bears are likely taking a cautious approach, considering Manning was able to practice in a limited fashion on Wednesday and Thursday. Manning also injured his hamstring last summer, but rushed back too soon, which caused him chronic problems for the remainder of the 2009 preseason.
Rookie Major Wright, who is also challenging for a starting job, should see plenty of action in the defensive backfield.
Jeff Dickerson covers the Bears for ESPNChicago.com and ESPN 1000.