I know a rematch has been discussed on other threads.

I don't think it will happen for a couple of reasons.

Why would Cotto's management want to put him back in with Tony? I can't see the result changing. Cotto hit Margarito with MONSTROUS SHOTS, they didn't seem to affect him at all. The only thing that Cotto could do differently is throw more to the body.

I think Tony is just way too tough for him, probably for anyone at 147. He seems to be impossible to hurt, a relentless fighting machine.

Lets put it this way, if Cotto decides to fight him again I think he will deserve huge credit just for signing the contract, because to get back in there with Tony will take a massive pair of balls.