Floyd Mayweather
Floyd Mayweather will be competing in December, albeit in an exhibition fight. In this picture, Mayweather looks on prior to the WBC Light Heavyweight title fight between Adonis Stevenson and Badou Jack at Air Canada Centre in Toronto, Canada, May 19, 2018. Vaughn Ridley/Getty Images

Floyd Mayweather's fight with Tenshin Nasukawa is back on, according to RIZIN president Nobuyuki Sakakibara.

It was announced last week in a press conference in Japan that Mayweather would come out of retirement once again to face Nasukawa at RIZIN 14 on Dec. 31 in what many believed was an official fight.

However, that wasn't the case, as Mayweather later posted on social media that he and his team were duped and that there was no official fight agreement. Instead, he claimed he was initially offered to perform in an exhibition fight.

"Now that I am back on U.S. soil after a long and disappointing trip to Tokyo, I now have the time to address you, my fans and the media in regard to the upcoming event on December 31st that was recently announced," Mayweather wrote. "First and foremost, I want it to be clear that I, Floyd Mayweather, never agreed to an official bout with Tenshin Nasukawa. In fact (with all due respect) I have never heard of him until this recent trip to Japan."

RIZIN broke their silence on the matter recently as they apologized for the confusion and said they expected a "clearer announcement" soon as they looked to resolve things.

“RIZIN Chairman, Nobuyuki Sakakibara, is currently holding discussions towards carrying out the match based on the original contract between our promotion and Mr. Mayweather," RIZIN said in a statement. "This based on the basic agreement we initially did have with Mr. Mayweather. We hope to have a clearer announcement next week."

And as per a tweet from Sakakibara on Thursday night, it looks like the misunderstanding is resolved as he claims Mayweather will compete with Nasukawa at RIZIN 14, but in an exhibition fight. He adds that he will speak with the 41-year-old during a press conference when he returns to Japan.

Earlier in the day, Mayweather spoke to TMZ and revealed the fight with the RIZIN star was back on.

Though the details surrounding the ruleset of the fight were initially unclear, the former five-weight champion revealed it would be a "little boxing exhibition” with no kicks allowed.

“I’m moving around with the guy for nine minutes, and of course it’s gonna be the highest paid exhibition ever,” Mayweather said. “It’s a no-brainer. Just because I’m retired from boxing, I still make appearances worldwide and make a ton of money.”

Mayweather is expected to fight in a lucrative rematch with Manny Pacquiao afterward which is slated to take place in May. The two first fought in May 2015 in a pay-per-view event that garnered a record 4.6 million buys. The contest, as a whole however, was a dull affair with Mayweather winning via unanimous decision.

Pacquiao will be defending his World Boxing Association welterweight title against Adrien Broner first, which is expected to take place in Las Vegas in January.

The official announcement for that fight will reportedly happen on Nov. 19 in New York where a press conference will take place.