He should either move down to Jr Middleweight, and fight the likes of Miguel Cotto. Or move up and fight someone like Lucian Bute ETC. Because there's virtually no one at Middleweight except for a few upcoming prospects.

Which Sergio Martinez won't want to bother with, because he's 35 and he hasn't got anytime to waste. Especially because of what kind of fighter he is a slick fighter.