WBA super middleweight champion Callum Smith is shocked at the unexpected news of Canelo Alvarez potentially facing Japanese star Ryota Murata in May.

Last year, Canelo unified the WBC, IBF, WBA middleweight titles when he won a twelve round decision over Daniel Jacobs in May. He then moved up by two weight divisions to light heavyweight, to score a knockout of Sergey Kovalev to capture the WBO world title in November.

But most recent possibility making the rounds is Murata, who holds the WBA's secondary title at middleweight. There is no word if the contest would take place at 160 or the super middleweight limit of 168.

Smith's trainer, Joe Gallagher, believes Canelo is now taking the same career path as Floyd Mayweather, who fought whoever he wanted regardless of the public view.

"We can safely say that Canelo is doing what Floyd Mayweather did - he fights who he pleases and everyone just does what he says," Smith's trainer Gallagher told Sky Sports.

"Callum will be shocked and gutted, as Billy Joe will be. Everybody was waiting for the golden ticket but it has gone to Murata. I don't think this will go down well in Mexico. We've been there with Liam Smith and everybody wanted Canelo vs Callum Smith. Even in Arizona the Mexican people were pushing for Canelo vs Callum. In September Canelo will have to fight a Callum or a Gennadiy Golovkin."

Canelo has fought his entire career in the United States and Mexico - but now he appears to be very motivated to fight overseas - and facing Murata in Japan is appealing to him. Murata, an Olympic gold medal winner for Japan, is a mega-superstar in the country.