Conor McGregor has threatened to break WWE Legend Paul Heyman's jaw in a late night social media post.
Commenting on the news of the imminent sale of WWE to the Endeavor group - which also owns the UFC - McGregor posted a photoshopped image of himself holding both UFC and WWE title belts.
Heyman, who is the manager of WWE Undisputed Champion Roman Reigns, claimed that McGregor was just a 'Roman Reigns wannabe.'