Conor McGregor has branded his UFC lightweight rival Justin Gaethje a "braindead fool" after the American said he would quit the sport if the Irishman got a world title shot.
Gaethje and McGregor's rivalry stems from a dispute between the ex-two-weight world champion and the former interim champion's manager Ali Abdelaziz. The American has been pushing for a fight with McGregor over the last few years, but it never materialised and he instead pursued other options atop the 155lb division.
But with McGregor expected to return against Michael Chandler later this year after two years out of action, talk has begun to swirl of a potential world title opportunity for the winner. This infuriated Gaethje, who has said that it would be "devastating" for top contenders to see him granted a title shot after just one win in what would be almost three years.
