Conor McGregor has got fans drooling over his impending UFC return after uploading a video of himself going full throttle in a training session.The Dubliner has long been teasing a comeback to the octagon, having been out of action since losing his trilogy fight with Dustin Poirier last July. The bout was stopped after McGregor, 33, suffered a broken tibia and fibula towards the end of the opening round.For months, rumours of who 'The Notorious' will face in his second coming have fluctuated wildly.