The rematch is on. After months of speculation, Conor McGregor has signed his bout agreement to fight Dustin Poirier in 2021.

McGregor and Poirier will square off for a second time at UFC 257 on 23 January.

Broken by TheMacLife and confirmed by ESPN’s Ariel Helwani, the news also confirms that the contest will be fought at the lightweight weight limit of 155 pounds.

The UFC lightweight division was blown wide open after champion Khabib Nurmagomedov, who holds victories over both McGregor and Poirier, unexpectedly announced his retirement after defeating Justin Gaethje in October. Though, UFC President Dana White has since said that he believes the Dagestan fighter will return to the Octagon someday.

At present, it hasn’t been confirmed where McGregor and Poirier will be fighting. However, White has hinted that he is looking to hold the contest on “Fight Island” in Abu Dhabi.

The pair first fought at UFC 278 in 2014. McGregor scored a first-round knockout victory over Poirier last time round, but both fighters are remarkably different today as this bout shapes up to be one of the most intriguing in recent times.