Boxing legend Roberto Duran is surprised that Mexican superstar Saul 'Canelo' Alvarez did not opt for an immediate rematch with WBA light heavyweight champion Dmitry Bivol.

Back in May, Bivol shocked a lot of observers by outboxing Canelo over twelve rounds.

Canelo had the ability to exercise a rematch clause, but he went in another direction by dropping back to super middleweight to make a successful defense against Gennadiy Golovkin in a September trilogy fight.

Since that bout, Canelo underwent surgery for a wrist injury and now intends to make a May return - but it won't be against Bivol.

Canelo wants to fight on Cinco De Mayo weekend against an opponent to be determined and then have a potential fight with Bivol in September.

Duran believes Canelo should pursue a rematch with Bivol as soon as possible - and not wait around until September of next year.

"It's strange that it hasn't been done so far. That fight should have been made. I was one of the boxers that nobody could beat me, and when I was beaten I became braver and trained harder, or much harder. You can't fight Canelo toe to toe because he's going to knock you out. What I did notice is that Canelo didn't know how to get inside a big person - and that can be corrected," Duran said to Erika Montoya of DAZN.

"He can correct his mistakes. But even though the trainer can correct those mistakes in the gym, you as a fighter are the one who has to work. The trainer can train you, but when you're in the ring it's a different thing. It's you against the other. If it's difficult (to correct those mistakes), then you have to have pride and shame.

"This guy beat me, but he can't beat me again. That was always my mentality, if a guy beat me I always wanted a rematch, it's strange that the rematch has taken so long. If I were Canelo I would have wanted it already. I would have talked to his manager, asked him to put him in heavier sparring partners who would box him, that they wouldn't let him in so that he could develop his way of fighting."