Floyd Mayweather says the exhibition fight business will be VERY good to him in 2019 -- with 4 or 5 bouts lined up this year, which will pay him around $80 MILLION!!!
Remember, Floyd says he got $9 mil for tuning up Tenshin Nasukawa during a New Year's Eve exhibition match in Japan ... and he's going BACK to Japan to fight again in July.
This time, Floyd says he's fighting a former Japanese boxer (he's not 100% sure who the guy is) -- but tells us he'll cash a $10 million check to go 3 rounds with his mystery opponent.