Conor McGregor claims his return to MMA is a ‘done deal’ for next June. MMA fans have a lot of things to look forward to in 2026, but none of them come close to the sport’s greatest legend fighting again. Here are three reasons why ‘Mystic Mac’ making a comeback is the best thing that can happen next year. People love to watch them, but no active UFC star has managed to break into the mainstream for years. If he loses, someone else can steal some of his shine and become the new superstar MMA has been craving for years.