Floyd Mayweather said he has offered UFC champion Conor McGregor $15 million and a percentage of pay-per-view sales for a crossover boxing bout.
Mayweather, who retired in September of 2015 after accumulating a perfect 49-0 record, told ESPN he would require a guaranteed $100 million to make the fight happen.
"I'm a businessman and it makes business sense," the 39-year-old American said. "Bring him over to the boxing world, and I'll show him what it's like."