McClellin was limited with the injury on Thursday. The Bears officially listed McClellin as having limited participation Thursday, and the starting defensive end did not practice Friday. Bears defensive end Shea McClellin is doubtful for Sunday’s game vs. McClellin would add two more sacks of backup Seneca Wallace in the fourth quarter. McClellin had the hit the knocked Packers quarterback Aaron Rodgers out of the game with a fractured collarbone. "No. 1, I feel bad on a personal level for him if he doesn't play because he really had a good game last week, we all know that," Bears coach Marc Trestman said. The Bears claimed Bass off waivers after the Oakland Raiders released him at the end of the preseason.