UFC boss Dana White has branded Conor McGregor a "f***ing unicorn" after he vowed to take on Russian hero Khabib Nurmagomedov once he's fought Floyd Mayweather.

Win or lose the billion-dollar August 26 fight against Mayweather, McGregor is UFC's biggest name and they want to break the Russian market with the Irish icon on their debut show.

9 Conor McGregor will fight Floyd Mayweather on August 26 but has already named his next mark Credit: Getty Images

9 Conor McGregor is hoping to shock the world of sport and beat boxing legend Floyd Mayweather at his own game Credit: AP:Associated Press

Bear-wrestling Nurmagomedov has a perfect 24-0 MMA record, with his eight most recent wins coming in the UFC.

But his reputation is rock-bottom after he missed his third scheduled fight with Tony Ferguson in March after hospitalising himself following a failed weight cut.

That was the second time the Dagestan man had pulled out of facing Ferguson and he has been keeping a low profile after posting a photo from his hospital bed.

Nurmagomedov has repeatedly called McGregor out and even labelled the two-weight world champion a “chicken”.

But Mystic Mac has never missed weight and has earned a huge amount of respect for his willingness to fight at multiple weights and accept fights at short notice.

And he has earned even more stripes by telling UFC boss White that he is ready and willing to go to Khabib’s backyard and fight in Russia.

9 Nurmagomedov probably won't fear McGregor after taking on a bear

9 Mystic Mac has never missed weight and fights anyone anywhere Credit: Instagram @thenotoriousmma

9 Khabib Nurmagomedov is a brilliant wrestler and huge Russian star Credit: Getty Images

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9 Dana White is backing Conor McGregor to win the fight Credit: AP:Associated Press

9 Conor McGregor got his hands wrapped for a heavy gym session ahead of his Floyd Mayweather fight

9 Conor McGregor has begun training in preparation for his fight with Floyd Mayweather Credit: Getty Images

9 Conor McGregor vs Floyd Mayweather tale of the tape

White told MMA Junkie: “You know what Conor told me? He said, ‘I want Khabib in Russia.

“Isn’t he fu***** awesome? He’s like, ‘I want Khabib, in Russia’. He’s awesome.

“Conor McGregor is a f****** unicorn. There’s nothing like him.

“He’s working on boxing Floyd Mayweather and then he’s talking about fighting Khabib in Russia right after.”

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