Floyd Mayweather targeted by Bellator MMA breakthrough star AJ McKee

Floyd Mayweather has been challenged by AJ McKee, the latest MMA fighter who wants to cross over into the boxing ring. McKee is undefeated at 18-0 as a Bellator MMA champion and, after a breakthrough performance at the weekend where he defeated Patricio 'Pitbull' Freire, he has called out Mayweather.