WBC and WBA unified middleweight champion Canelo Alvarez is more than willing to do a rematch with the now retired Floyd Mayweather.

Canelo's sole career defeat came at the hands of Mayweather on September 14 of 2013. The bout took place at a catch-weight of 152-pounds, with Mayweather dominating the contest over twelve rounds at the MGM Grand in Las Vegas.

Mayweather retired from boxing back in August of 2017, after snapping a near two-year layoff to score a tenth round stoppage of UFC superstar Conor McGregor.

At the moment, Mayweather is discussing the possibility of a comeback - for a rematch with Manny Pacquiao, who Floyd defeated back in May of 2015. And Mayweather is also teasing his fans that he might entertain the idea of a cross-sports boxing match with UFC lightweight champion Khabib Nurmagomedov.

If Mayweather is serious about come back, Canelo says he should do the right thing and grant him a rematch.

"Look, that's something that I would love," Canelo said to Sports Illustrated. "If he wants to come back and is still motivated to come back, he should do it right. He should do it right and give me the opportunity to have that rematch and demonstrate who is better."

Canelo believes he was too inexperienced to beat Mayweather in 2013 - and would love to get the opportunity to do it again.

"In that first fight, experience beat me, as I was young," Canelo said. "And I don't have much more to say than his experience beat me and he is a great fighter. I'd love to have the opportunity to prove myself at this point in my career. I think it would be very different and if he is willing to come back, I would love to have that rematch. Show the people, who is truly the best."

Weight would certainly be an issue. Mayweather has never fought any higher than 154-pounds, and Canelo is heading up to 168-pounds to challenge WBA "regular" super middleweight world champion Rocky Fielding on December 15th at Madison Square Garden in New York.