Kamaru Usman has priced himself out of a fight with Israel Adesanya after claiming it would take $100 million for him to enter the octagon with his "brother".
Usman is currently the reigning welterweight champion and is ranked as the leading pound-for-pound fighter in the promotion.
The Nigerian has proposed a switch to middleweight in a bid to become double-champion after Jan Blachowicz faced Adesanya for the light-heavyweight belt.