Floyd Mayweather has signed a deal to fight on New Year's Eve in Japan -- and it might be an MMA match -- but, it ain't against Conor McGregor or Khabib Nurmagomedov. Just like TMZ Sports told you would happen ... the 41-year-old boxing superstar announced he'll be fighting at RIZIN 14 on Dec 31, against an undefeated 20-year-old kickboxer named Tenshin Nasukawa. We broke the story ... Floyd was in talks to get a fight done in Asia back in September. The plan is to get 2 fights under his belt ... a tune-up fight and then a bigger opponent, someone like Manny Pacquiao.
Floyd says he's still working with the promotion to decide on whether it will be boxing rules, kickboxing rules, MMA rules, etc. Floyd says the fighting rules will be sorted out in the coming weeks. Floyd also says the two sides are still figuring out what weight the fight will be at. Floyd held a press conference in Japan late Sunday night -- Floyd did not say how much money he expects to make for the fight.