Well, when Cotto was at 140lbs he rightly believed Floyd was too risky as he wanted to develop. Now I believe Cotto would accept if Mayweather offered him another shot.
cotto didn't say ****, arum AND mayweather himself said cotto is too green and he would not get any credit beating him.
No fighter would turn Mayweather down except maybe Manny. Mosley got $6 million to fight Floyd. Does anyone think Cotto wouldn't be interested in that kind of money. IMO Manny and Floyd have sat down together and agreed not to fight for the time being. It seems they will milk their status as the 2 most famous fighters in the world and rake in the cash with some easy defenses before getting in the ring together.