Retired boxing legend Floyd Mayweather Jnr said he is working with UFC president Dana White and Rizin CEO Nobuyuki Sakikabara on a huge deal, although it is unclear whether it signifies a ring return or a debut in the mixed martial arts cage.Money Mayweather (professional boxing record 50-0) has not fought since humiliating Japanese kick-boxer Tenshin Nasukawa via first-round TKO in an exhibition bout overseen by MMA prom
