Weekend mail call:Baron from Sacramento wants to know if I think Ahmad Brooks can play inside linebacker while Navorro Bowman recovers from a torn ACL.Bill Williamson: It's interesting. Brooks did play some in the middle last season. But for the most part, he will stay on the outside while Bowman, who could be out for half the season, recovers. Brooks can make his biggest impact where he is, but again, the 49ers can get multiple in their schemes, so I wouldn't be surprised to see some sequences where Brook is inside while Bowman is out.