Floyd Mayweather Jr. confirmed that he will face Marcos Maidana in a rematch on Sept. 13, ESPN reported on Tuesday.

No formal announcement about the Mayweather-Maidana rematch has been made, but the reigning pound-for-pound king reportedly said that the fight is a done deal.

"Sept. 13, back to business, Marcos Maidana-Floyd Mayweather, part II. And then in May, I'm fighting in May and I'll have a big surprise for ya'll," Mayweather said.

Maidana also confirmed on his Twitter account that talks about the rematch have started, but his manager, Sebastian Contursi, said that they are still waiting for an official contract for the fight.

"We have still not officially completed [a deal] for the fight," Contursi said in a BoxingScene interview. "Therefore anything is possible, but Mayweather has stated that Maidana will be his next opponent."

Contursi added, though, that they are still optimistic that the fight will happen despite the fact that there is still no official word from Mayweather's camp, saying that the 37-year-old champion usually announces his next fight a few weeks before the fight date.

"Mayweather has a habit of deciding his opponents very close to the date of the fight," Contursi said. "He did the same thing when he announced that Marcos would be his opponent for May 3. He revealed the name of Marcos on March 8th [less than two months before the PPV date]. Hopefully Marcos will be the opponent."

Maidana gave Mayweather a run for his money in their first showdown on May 3. The Argentine put a lot of pressure on Mayweather, but the latter eventually walked away with a majority-decision win.

The first fight reportedly generated just 850,000 pay-per-view buys, which was way below the predicted number, but Mayweather Promotions CEO Leonard Ellerbe reiterated that they were pleased with how the first fight turned out.

"We're very pleased with the success that we had from the Maidana fight. Last I checked Floyd Mayweather went to the bank and cashed a $32 million check," Ellerbe said. "Floyd Mayweather has set the bar so damn high with the pay-per-view success that he's personally had that he is only competing with himself."

Mayweather's camp and ShowTime predicted at least one million buys for the fight, but they failed to hit it again similar to the Grand Rapid native's fight against Robert Guerrero in May last year.