Ready or not, backup quarterback Todd Collins, who signed with the team on Aug. 23, is expected to play in Thursday night's final preseason game against the Browns in Cleveland.
The veteran said playing in similar systems in Kansas City and Washington has made learning Mike Martz's offense much easier.
"Starting from scratch it's very difficult," he said. "For me, at least, I had some base knowledge of it. I know the numbering system and a lot of the formations but he has expanded the offense quite a bit since I was in it so I need to study more of those new concepts."
With Caleb Hanie still only participating in some parts of practice with a sore shoulder, Collins could be Jay Cutler's primary backup for the season opener against Detroit.
"It's preseason football but it's important for me and for this team," Collins said. "Your last couple games, we haven't done exactly what we wanted to do so we need to go out and put some points on the board."