If I could schedule Floyd Mayweather's fighting future, here's how it would go:

(JFF let's assume Floyd decides to try to one-up Marciano's 49-0 mark)

Spring, '14: Manny Pacquiao (if he handles Rios)
Fall, '14: Sergio Martinez (rested and recovered)
Spring, '15: Gennady Golovkin (he & his trainer have said they want Floyd)
Fall, '15: Adrien Broner (beefed up and provided he has gotten past Maidana & others)
Spring, '16: TBA (possibles: Danny Garcia, Erislandy Lara, Keith Thurman, Errol Spence, or a rematch of any of the above fighters if the initial fight with Mayweather was epic enough)