Jake Paul has continued to mock Conor McGregor by claiming to be training in MMA while his rival drinks in Dubai.
Paul has upped the ante in his campaign to fight McGregor by offering to do so by signing a one-fight deal with the UFC.
He made the offer to UFC president Dana White while setting out terms depending on the result of the fight.
Were he to win, Paul would expect White to implement better conditions for his fighters, including pay and heathcare.
If he lost to McGregor, Paul would donate his purse to UFC fighters who earn less than $50,000 per bout.
And after making the offer, Paul took to Instagram to post a video of himself wrestling another man before putting himself through a number of different exercises.
"While I'm training MMA, Conor McGregor is drinking Jack Daniels in Dubai putting up sloppy boxing videos. Jackass," read the caption.
Paul and McGregor have exchanged insults in recent days after the former two-weight UFC champion posted a clip of his boxing training.
Paul labelled it "embarrassing" and vowed to KO the Dubliner; McGregor responded by calling Paul a "jackass".
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After making the offer to White, Paul's manager Nakisa Bidarian told ESPN: "While the UFC business has meaningfully changed for the better since my employment there six years ago, I truly believe a UFC fight between Conor and Jake on ESPN would be the biggest MMA PPV event in history."
Paul's best chance of trading blows with McGregor remains in the boxing ring.
The 25-year-old has amassed a record of 5-0 as a professional and is set to return in the summer.
McGregor will return to the UFC around the same time and has only two fights left on his contract.
He has been reluctant to engage with the possibility of facing Paul but a fight between the two would be one of the highest-grossing of all time.
