Yeah, I'd like him back in a Bills uniform. He brings veteran leadership and depth. I don't think he's starter material, but valuable in a backup or situational role. The 49ers have drafted his replacement.
Thing is, he didn't want to be part of a rebuilding Bills team before and doesn't want to be part of a rebuilding 49ers team. Not sure if he'd even entertain coming back to Buffalo. That being said, I feel the 49ers are in more of a rebuilding phase than we are with new coach, new coordinators, no answer at QB.
But yeah, I think it'd be money well spent.