The current WBA "super" and WBC middleweight champion, fresh off his majority decision victory over Gennady Golovkin on September 15, is going to fight WBA "regular" super middleweight champion Rocky Fielding on December 15 at Madison Square Garden. "Next December 15th at the New York MSG", Alvarez wrote.
"Taking a big challenge more in my career and representing the WBC as 160lbs champion now I will fight for the world title for the 168lbs", tweeted Alvarez, who still holds the WBC and WBA titles at middleweight.
But he has opted to move up to super-middleweight for at least one fight having also won a world title at light-middleweight.
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The Premier League now takes a two-week break for the global window with City next in action at home to Burnley on October 20th. That incident brought late drama, but after the thrills of the four meetings last season, this was something of an anti-climax.
The 28-year-old Mexican will take a 50-1-2 record with 34 knockouts into the fight.
It will be Alvarez's first experience of fighting at the famous venue in NY - his last bout outside Las Vegas was in September 2016, when he defeated Liam Smith to secure the WBO light-middleweight title in Arlington.
Fielding won the secondary WBA title by stopping Tyron Zeuge in July, while fellow Scouser and former foe Callum Smith won the full version of the title by beating George Groves last week. HBO recently announced that they will be leaving the boxing business after 45 years.
Matchroom promoter Eddie Hearn, speaking in Chicago ahead of the "Worlds Collide" bill, revealed Canelo's promoter Eric Gomez, of Golden Boy Promotions, approached him to arrange the fight.