Floyd Mayweather criticises Conor McGregor as boxing great says comparison is "disrespectful"

Floyd Mayweather has branded comparisons with Conor McGregor as "disrespectful". The retired boxer has previously said he would take on the Irishman in a boxing match. But after McGregor won a second title at UFC 205, Mayweather said he had a long way to go to match his success. He told TMZ: "I didn't know he was undefeated, I didn't know he reigned in MMA for 20 years and was undefeated, and was world champion in five different weight classes. That's something I didn't know.