Floyd Mayweather has declared himself out of retirement to fight Conor McGregor and demanded the UFC champion commits to a crossover bout in June.
McGregor has been challenging Mayweather, who retired in 2015 with a 49-0 record, to a fight for months.
The American has asked for a guaranteed 100 million dollars to make the fight happen, with 15 million going to McGregor.
But UFC president Dana White has talked of 25 million dollars to each plus pay-per-view money.
McGregor is contracted to UFC and the organisation would have to approve any fight.
The duo will also have to agree to a format which Mayweather insists would be straight boxing.
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