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'The Super Samoan' takes on the two-time heavyweight champion in the early hours of Sunday Morning at UFC Fight Night 85 in Brisbane, Australia.

Mir, 18-10, has vowed to defeat the 2001 K1 World Grand Prix champion and has warned him that his career could be over if he fails to tap to one of his deadly submissions.

"He’s going to have to make the decision of if he wants to continue fighting or go ahead and lose that fight," Mir said.

"When I say continue fighting, I mean if he taps, he can continue on (with his career). Kneebars and heel hooks at his age could take him out of competition for an extremely long time.”

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Hunt, who goes into the contest on the back of a TKO victory over Antonio 'Bigfoot' Silva at UFC 193, hasn't been fazed by Mir's threat and has told him to do his worst.

“Good, break my legs. At least they will be broken at work,” Hunt said.

“I am ready to die in there. I am ready to give my life in there to be the best fighter on the planet and I don’t know if he is.

“That is the only way to feel. I feel I am the best fighter in the world and I am ready to go that much further than he is on Sunday.

“I didn’t get this far worrying about what people say.

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“It is an idle threat. That’s his game."

Despite encouraging Mir to do his best to break his legs, Hunt has admitted he will respect his opponent's deadly Jiu-Jitsu skills - albeit when he's landing heavy shots on his chin.

“I’ll show him my respect on Sunday when I am punching his face in," he added.

“If I end it there that’s what it is and if he’s going to break my legs then break them."