Tommy Fury lambasted "absolute clown" KSI following confirmation of his Misfits Boxing bout with Darren Till live on DAZN, telling the former he "can wait his turn" for a rematch.
The pair met in the ring in October last year, where Fury handed the YouTuber-turned-boxer his first professional loss by unanimous decision over six rounds in Manchester.
Fury, the younger half-brother of heavyweight star Tyson Fury, will fight for the first time since that clash when he faces former UFC contender Till at Co-Op Live on January 18.
KSI has been adamant that he should have won the pair's fight, and now finds Fury fighting under his promotional banner, but the 25-year-old believes the joke is firmly on him.
"I just think he's an absolute d—head really, because he got beat fair and square by me," he told The Stomping Ground. "What an absolute clown. What a freak.
"He's giving me a platform to main event my own town, giving me everything, millions. Think the joke's on him, really. What a fool. He's doing my nut in. I don't like him.
"My mind is on Darren Till. Him, the star jumper, he can wait his turn. He's a beaten man and he's very upset about it, as we can see. He's in the shadows at the minute."
KSI has not fought since the loss to Fury, though he has been touted as a likely opponent for Jake Paul, who is coming off a win against Mike Tyson earlier this month.