"I want to continue coming over here and bringing other fighters over here so my company can continue to grow and RIZIN can continue to grow".
And now Mayweather has sealed a deal with Nasukawa and RIZIN Fighting Federation, although the rules of the fight are yet to be agreed.
Mayweather's opponent is more than half his age and has an impressive career record.
Speaking at a news conference in Tokyo on Monday, there was no mention of UFC's two biggest names. I'm a little surprised myself. If I see an opportunity to make $300 million in 36 minutes why not, ' he said after that fight in Las Vegas. My punch can change history.
Nasukawa, 20, has significant hurdles to overcome, beyond experience.
Following his retirement at 50-0, Mayweather never really stepped away from the limelight.More news: With Asian aid, Iran might withstand new U.S. oil sanctions
Floyd Mayweather is planning on fighting Japanese kickboxer Tenshin Nasukawa on December 31 in Saitama, north of Tokyo. Nasukawa, a southpaw, now holds the Rizin featherweight belt, at 126 pounds.
He has fought a further three times in MMA - winning all three bouts.
Nasukawa competes in their championships in both MMA and pure kickboxing. "Boxing rules I wouldn't mind".
"Ghosts are freaky as hell", he told mixedmartialarts.com last March.
"My company have been making some huge fights happen in the USA but we look forward to taking the Mayweather promotions banner and the TMT (The Money Team) banner worldwide".
"There is definitely life outside of Earth for sure", Nasukawa said.
Apparently, Mayweather will always be here, too.