Golovkin. Why would anyone want to see Cotto fight again? Cotto lost against Trout ffs. .. Khan??? Are you guys serious?? Those guys are not elite level. An unbeaten KO monster from the European mainland should get his turn. Golovkin vs. Floyd at 154!!
Pacquiao or Cotto. Beating Pacquiao again won't add anything to his legacy, unless he can KO Pac (unlikely). It will only increase his bank account. Beating Cotto at least would give Floyd the lineal middleweight title. Obviously this would be just something symbolic, because he will never fight GGG and other 160 contenders.
They are clearly setting up for a second Cotto fight. All that remains is for Geale to get robbed on the scorecards.