British UFC star Paddy Pimblett has called out Jake Paul - for a fight in his mum's garden.
Paul has insisted he will make the switch from the boxing ring to the MMA cage before he retires, and has even called out Khabib Nurmagomedov.
The YouTube star has also taken it upon himself to be the frontman in the fight against perceived poor pay in the UFC.
But Pimblett, who will make his second UFC appearance in London next month, believes Paul is being disingenuous.
"The way he’s saying, ‘I’m gonna end up getting in the cage.’ You’re not, lad. You’re not. Stop lying," he said on the Chattin Pony podcast. “If you want to have an MMA fight, I’ll fight you in my ma’s garden tomorrow. You know what I mean?
"He’s going on, he’s trying to act like a martyr, like he’s helping MMA fighters. He’s not, lad. He’s just doing that for his own publicity.
"That’s why the only thing what’s p****** me off about it, people are like, ‘Ah, he’s actually being good for MMA fighters.’ He’s not. He just wants to make a show of Dana White, and that’s the perfect way of doing it."
Paul has a high-school wrestling background but little other in the way of martial arts experience.
He has beaten two former UFC fighters in his boxing career in Ben Askren and Tyron Woodley and has designs on fighting Nate Diaz and Conor McGregor.
Paul has received support from fighters in his bid to take on UFC president Dana White - but Pimblett has repeatedly spoken out against the social media star.
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After Paul's first win over Woodley last year, Pimblett said: "I don’t waste my time with s*** like that. The only thing I’ve seen is where Woodley catches him with a punch and nearly knocks him out. I’ve heard off a few people that Woodley got robbed… You need to finish people like that, or you’ll get robbed.
"He’s a sausage,” the UFC star said. “I’d fight him tomorrow and I’d beat him tomorrow."
Liverpool lightweight Pimblett stopped Luigi Vendramini on his UFC debut last September and will take on Kazula Vargas at London's O2 arena on March 19.