Ask him about his thoughts on 'The Fighter', and how much input he had in the making of the film. Aswell as wether he thinks it is a good representation of his and his family's life. Will their be a sequel? How much of an emotional and physical toll did the Gatti fights have on him? How did he feel when Gatti passed away? Would he consider training aspiring fighters?
Ask him if he is satisfy the way his boxing career concluded with the Gatti trilogy? Also any regrets during his career in which he could take back... If he felt that he could have achieve more in his boxing career with the thing he knows now. Any fighter that he wish to face, but never did. Make sure to post his interview:good