McKenzie cannot hold on to the football. Also, Roberts has been getting those additional 10-20 yards in the KR game. In a playoff game, it is all about protecting the football. If Andre can go next Saturday, he will be the one returning kicks and punts for the Bills.
If Andre cannot go, they will go with Duke Williams.
Thee only other ay Williams is active is to deactivate Kroft for thee game. Again, I don't think McDermott will do that.
Foster and Perry are part of the Special Teams.