Rising UFC featherweight Conor McGregor and his team are confident heading into their UFC 178 fight against Dustin Poirier this Saturday. McGregor's coach John Kavanagh is looking way past this fight, however, and toward all-time greatness for the "Notorious" one.

“It’s hard to put in words why I think he will be remembered as the greatest of all time," Kavanagh recently told SevereMMA. "I do think that he will definitely be a two-weight world champion, that’s a given, and I think with a certain set of circumstances he will be the first and only three-weight division UFC champion. That would be at featherweight, lightweight and welterweight."

Whoah.

All right. Three fights in, McGregor certainly appears to be the hottest prospect in the featherweight division, but he's also in one of MMA's most talent-rich classes, which is ruled by longtime king Jose Aldo.

So, to take for granted that the Irishman will become the 145-pound champ is a stretch. Of course, that's why everyone is in the game, and they have to possess that type of confidence to train and get in the cage.

But for Kavanagh, winning the featherweight belt will be just the beginning for McGregor. Dan Henderson, BJ Penn and Randy Couture have all won world titles at two different weight classes.

Can McGregor become the first to win titles in three? “It’s not hard for me to imagine that scenario," Kavanagh said.

"I think two people have already done it in two weight classes and even then they did in a time that was a little different – the skill set was a little bit lower."

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