Let's look at Miguel Cotto choices a little closer to help him make a selection. Now we all know Miguel Cotto's last hurrah will be to stock his nest egg before he leaves the sport. That eliminates Peter Quillin, the WBO champion is a bad mix for Cotto with his power and youth, too much risk for no cash. Peter just doesn't bring in the kind of crowd that would generate the kind of money Cotto would require.
Gennady Golovkin is the choice many would like to see but won't because like Peter he doesn't yet bring in the kind of numbers that would make a huge revenue bout at this time, but if Miguel stays long enough he will have no choice but to face the hard hitting man they call GGG.
Saul 'Canelo' Alvarez is the best choice and here is why, he has a huge Mexican following plus the fact Cotto is Puerto Rican the rivalry can continue and generate huge PPV numbers. They both know what it would take to make the fight happen so the only left is to make it happen.
Floyd 'Money' Mayweather the best option of any fighter, you even have fighters who are retired for over 20 years wishing they could fight him. he is the lucrative payday Cotto would like to have so he can retire loaded with cash, but Mayweather is not keen to fighting in December. the month in which Cotto would like to return by.