Canelo Alvarez's team say they've been promised a September fight with Floyd Mayweather, and both fighters have agreed to return on May 4, sharing a pay-per-view card in separate bouts for likely the final time.

Alvarez (41-0-1, 30 KO) and Mayweather (43-0, 26 KO) don't have concrete opponents for May 4, but it's expected that Floyd will face Robert Guerrero, while Austin Trout has been the main name discussed by Canelo's camp, though Golden Boy doesn't appear high on that matchup.

Canelo's manager Chepo Reynoso says they've agreed to terms to return on May 4, and after that, they'll face Mayweather in September. The superstitious may see a big, flashing warning sign here -- Alvarez has had big fights set for "next time" recently, only to see those opponents lose in big upsets.

Victor Ortiz was supposed to face Alvarez in September, and wound up having his jaw broken by Josesito Lopez in June. Lopez replaced Ortiz, much to many fans' dismay, and was predictably thrashed by Canelo. Then, it was all but set that Canelo would be fighting Miguel Cotto on May 4 of this year, but Cotto lost to Trout in December. This time, boxing fans would be near-unanimously happy, it seems, for the conqueror to become the new opponent.

Will the Canelo curse strike again? Obviously, this is another level, and it would have Mayweather losing to (most likely) Guerrero, which would be the biggest upset in recent memory. But hell, why not? Let's get crazy! Or maybe they could just both win and set up what would surely be the biggest fight of the year. That would be fine, too.