A bout between Conor McGregor and Kamaru Usman is chatter that seemingly won’t go away in the UFC world right now and Joe Rogan has chimed in and warned the Irishman to be more careful on who he is calling out.

Familiar face Rogan, during an episode of his podcast, has said that McGregor may be ‘biting off more than he can chew’ with his latest callout.

“Now he’s talking about fighting Kamaru Usman. Be careful what you ask for. Be careful what you ask for. Usman is a big man and he’s top of the food chain right now. That’s the best pound for pound fighter alive Kamaru Usman and he’s a natural 170.

“He’s as good as they get. He’s got ferocious knockout power, he’s elite at wrestling, nobody puts him on his back… And he’s still getting better. He’s still getting better.”

Most fans are in agreement with Rogan, especially seeing as McGregor has been sidelined with a broken tibia and fibula since his July 2021 trilogy bout with Dustin Poirier.

Despite McGregor saying that the 170-champion is a bit “sloppy”, Rogan has backed Usman by saying he has looked superb every time he has stepped into the Octagon.

"I would put Kamaru Usman up against any 170-pound fighter that’s ever lived. I’m not saying that he would beat Georges St-Pierre, I’m not saying he would beat all of them, but he might beat all of them. He might be the best that’s ever been at 170."

Kamaru Usman is the current pound-for-pound king

Usman’s impressive resume and career has landed him at the top of the official UFC pound for pound rankings, which is maybe something McGregor should consider.

McGregor, himself, was once in the conversation to be branded the best pound for pound fighter that has ever stepped foot inside the Octagon, but those days are now a distant memory seeing as his record is 3-4 since 2016.

The former UFC featherweight and lightweight champion said last week that he will “waltz back in” to a 170-pound title challenge against Usman.

Rogan has expressed his concerns, however, about the matchup and has focused on two obvious qualities that favour the Nigerian fighter; his outrageous skillset and the natural size difference.

“Come the f*** on, son. (Usman is) f****** jacked. And he’s about perfect for 170 in terms of his dimensions. He’s just tall enough, just strong enough. … Imagine 15, like, beautiful cowboy-cut ribeyes. That’s the advantage that Usman has.”

Maybe it’s worth Conor having second thoughts about this fight, but knowing his charismatic personality, we do not see him shying away.

Before any potential fight between these two UFC giants materialises, Usman is expected to come to blows with Leon Edwards in July, although this title challenge is not yet official.