Here's his statement. Story developing ...
"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 regards to the upcoming event on December 31st that was recently announced. 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. Ultimately, I was asked to participate in a 9 minute exhibition of 3 rounds with an opponent selected by the "Rizen Fighting Federation".