Canelo Alvarez is aiming to win another belt…

The 28-year-old Mexican boxer, still celebrating his majority decision victory over Gennady Golovkin to win the unified middleweight world title in their September 15 rematch, will be back in the ring before the end of the year and in a new weight division trying to win another belt.

Alvarez will move up to the super middleweight division and challenge Rocky Fielding for his secondary world title on December 15 in his first fight at famed Madison Square Garden in New York.

“I’m very excited to announce my next fight. Next December 15th at the New York MSG,” Alvarez wrote on social media. “Taking a big challenge. I will fight for the world title at 168 pounds versus Rocky Fielding, the current WBA champion!”

Alvarez and his team were planning for a possible December 15 fight even before the fight with Golovkin as long as Alvarez came out of the fight healthy.

Although Alvarez (50-1-2, 34 Kos) suffered a nasty cut over his left eye against Golovkin, Golden Boy Promotions president Eric Gomez told ESPN that Alvarez had been told by his doctor that he would be fine to fight in December and would soon be permitted to return to training.

So while Alvarez plans to fight again this year, it is unclear whether he will do the fight with his longtime broadcast partner HBO, which has had him under contract since 2015. A Golden Boy spokesman told ESPN that no decision on a broadcaster has been made yet. HBO announced last week it was giving up its boxing franchise after 45 years of covering the sport.