His contract with Bob Arum 's company expired following his Dec. 3 revenge , 10th - round knockout victory against Antonio Margarito .
He will be working with Golden Boy Promotions , Top Rank 's archrival , on the fight with Mayweather .
His contract with Bob Arum 's company expired following his Dec. 3 revenge , 10th - round knockout victory against Antonio Margarito and he will be working with Golden Boy Promotions , Top Rank 's archrival , on the fight with Mayweather .