Retired boxer Floyd Mayweather has countered Conor McGregor's offer for a bout.
McGregor has recently demanded a $100 million dollar purse.
Mayweather has told ESPN they tried to make the Conor McGregor fight, but he's only willing to offer the mixed martial arts star $15 million and a cut of the pay-per-view money.
He says McGregor can't justify a $20 or $30 million dollar payday, when he's never earned $10 million dollars before.
Floyd Mayweather says he would want a guaranteed $100 million to fight McGregor, which he says is the only bout that will get him out of retirement.