UFC fighter Jeremy Stephens vows REVENGE against Conor McGregor for trashing him at the UFC 205 media event -- telling TMZ Sports he'll "mop the floor" with the Irish superstar.
Conor dissed the hell out of Stephens during the event -- when he turned to the UFC veteran and shouted, "Who the fuck is that guy?!"
The clip went viral -- but now, Stephens is firing back in a scathing statement in which he refers to Conor as "McClown" -- and blasts him as a "bully" who can't hold his own against real fighters.