Allen missed the Bears preseason opener due to family reasons, but he did play last week when the Jacksonville Jaguars traveled to Soldier Field.
In other news, recently signed wide receiver Santonio Holmes will make his Bears’ debut against the defending Super Bowl champions. Holmes is expected to battle Josh Morgan for the club’s vacant third wide receiver spot, while veteran kick returner Darius Reynaud and Michael Spurlock will try and impress the coaching staff in the return game. Chris Williams was a late scratch with a tight hamstring.
Mills (foot) told reporters on Wednesday that he hopes to be full-go at practice when the team returns to Halas Hall on Monday.