Sounds like only reason Floyd is fighting Conor is to pay off a tax debt:
Floyd Mayweather says he can't pay off his 2015 tax liability until after he gets money from his Aug. 26 fight against Conor McGregor.
The boxer filed a Tax Court petition on July 5 that asks the IRS to allow him a reprieve until the fight.
"Although the taxpayer has substantial assets, those assets are restricted and primarily illiquid," the petition said, according to the legal website Law360. "The taxpayer has a significant liquidity event scheduled in about 60 days from which he intends to pay the balance of the 2015 tax liability due and outstanding."
http://www.espn.com/boxing/story/_/i...orary-reprieve