Well vitali if he's fighting again needs to do so quick and then retire, he's past his experation point...sure he still beats most convincingly but ya can just se he isn't quite what he was, so if he sticks around to much longer he might get a loss to someone he would have never lost to just a few years ago.

Wlad picks up the other belt beats the people silkey mentioned as well as pulev and maybe a guy that's yet to emerge and retires.