I don't think this is necessarily a case of bringing a guy back simply because he used to be on the team, he's still a good pitcher, and a 'crafty' lefty to boot. With the market for pitching the way it is, 6M (with a 6M option, 1M buyout in '14) seems to be quite a bargain for a guy who will give you ~190 innings of <4 ERA baseball. This said, I wouldn't give up too much for him, maybe a lower level arm, but bringing Cappy back seems to me like a much better allocation of resources than say signing Dempster. I try to remain impartial, but I must say, I really do love my 'crafty' southpaws.