Mexican superstar Saul 'Canelo' Alvarez is not interested in the recent challenge from UFC world champion Kamaru Usman, who is widely regarded as one of the best pound-for-pound fighters in mixed martial arts.

Canelo is back on Saturday night, when he faces Caleb Plant with the WBO, IBF, WBA, WBC super middleweight titles at stake at the MGM Grand in Las Vegas. The fight will headline a Showtime Pay-Per-View card.

Canelo believes Usman is looking to get himself a payday.

Usman, who this Saturday will defend his title against Colby Covington in the headline bout of a UFC pay-per-view in New York, placed a fight against Canelo on the table.

"I think that's something that [would be] the biggest ever in history," Usman said to ESPN. "That's what I'm looking to do. That's something that scares me. That's something that gets me up in the morning. That's something that I might risk leaving my daughter for another twelve weeks for.

"We'll see who does better. We're both in the business of entertainment nowadays. He's gonna entertain on the same night. So will we. We'll see who does better numbers and then we're gonna sit there and we'll have a discussion with the pound-for-pound best promoter in the game Dana White and we'll try to make something happen.

"He's a master of his craft. He's used to these boxers. He's used to the boxing speed and the boxing movements and things like that. We're different. Sometimes different can be good. What's wrong with giving him a different look? Of course, it's a tall tree to climb, but we saw what happened the last time I was the underdog."

But Canelo, focused on his fight against Plant, simply rolled his eyes and replied: "Payday" when ESPN Deportes asked him for a reaction to Usman's challenge.