The Bears lost their final game of the pre-season to the Cleveland Browns last night.
The head coach told the team's website: "We will put the pre-season behind us now and everybody's got to get their attention on next week, and that will start soon.
"I don't think anyone played themselves out of the roster tonight. There's going to be two or three very difficult decisions tomorrow based on the play of some of the guys today.
"I don't want to be specific right now. We're just going to wait it out, and early morning we will make some final decisions after a good night's sleep. I think the guys who are in a position to win a job on this football team have made it very difficult going into tomorrow."
The Bears face the Cincinnati Bengals in the first week of the season.