Since the announcement of UFC 300, fans have been matching up potential timelines for the event with Conor McGregor ‘s seemingly imminent return. The Irishman has been out of action since suffering a sickening leg break at UFC 264 during his trilogy with Dustin Poirier. He has since been linked with a return, with UFC 300 being touted as a possible destination but that could now be in doubt. According to Chael Sonnen , the promotion won’t offer McGregor the headlining slot on their historic pay-per-view in April. The slot will instead be held for one of possibly several title fights to feature on the card. “You know why Conor McGregor, the world’s biggest star, will not be fighting at UFC 300