How confident is Conor McGregor in his finishing abilities?

So much so, that the featherweight superstar was willing to bet his bosses seven figures on when he'd knock out Chad Mendes.

McGregor has been known to make bombastic predictions leading up to his fight. And according to UFC president Dana White, McGregor had a finish in mind for his UFC 189 interim featherweight title fight Saturday night at the MGM Grand Garden Arena in Las Vegas.

White said on Tuesday's Jim Rome Show that McGregor has predicted he'll knock Mendes out in the second round. And he was willing to bet White and UFC CEO Lorenzo Fertitta $3 million that this would be the case.

"You want to know how confident this kid is?" White asked. "I can't even believe I'm going to say this, but, he told Lorenzo and I the other day ‘I'll bet you $3 million I knock him out in the second round.'"

The UFC boss isn't likely to take McGregor up on the proposition, given their promoter/fighter relationship. But to White, it underscores the charisma which has made McGregor a breakthrough star.

"I like to bet, I don't know if I'm that willing to take that bet," White said. "When I tell you how extremely confident this guy is in himself, it's fascinating. He is a very unique, fascinating person to listen to. Fun to listen to, and fun to watch."

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