Golovkin (37-0-1, 33 KOs) and Alvarez (49-1-2, 34 KOs) produced a controversial draw in their first meeting on September 16, with many favouring the work of the undefeated Kazakh.
The two fighters were originally scheduled to face other in a much-anticipated rematch in Las Vegas on May 5, before Alvarez withdrew from the fight in the wake of a failed drug test.
Alvarez returned a positive sample for trace levels of the decongestant Clenbuterol, which his promoter Golden Boy Promotions blamed on contaminated meat in Mexico.
Both sides have been locked in fierce negotiations since in an attempt to revive the rematch, while Golovkin was stripped of his IBF title for failing to agree to a mandatory defence against Sergiy Derevyanchenko.
However, an agreement appears to have been reached between the two camps after Golden Boy Promotions owner De La Hoya announced the rematch on social media.
“I’m happy to inform that we have a fight September 15!!!! #CaneloGGG2,” wrote the former six-weight world champion.
More to follow…