The UFC is trying to book a lightweight bout between Conor McGregor and Dustin Poirier, and McGregor has reportedly accepted the offer.

McGregor responded to Poirier on Twitter Thursday morning, saying he has accepted on the condition the fight takes place in 2020.

Ariel Helwani of ESPN confirmed McGregor is eager to fight before the end of the year, with the first target date being Nov. 21.

This chain of events began when McGregor and Poirier agreed to a charity sparring match.

Shortly thereafter, UFC president Dana White made it clear he was interested in arranging a fight between the two in the Octagon.

McGregor and Poirier have actually met once before, when the two were still fighting at featherweight. In many ways, McGregor's victory over “The Diamond” is what cemented his status as a title contender in the division, a rise culminated by a historic knockout over then-champion Jose Aldo.

According to Helwani, Poirier appears to be interested in those open November and December dates to fight.

The ball now appears to be in the UFC's court.

It seems like the November card would make the most sense for a fight between the two contenders. Then again, the December cards are intriguing particularly after the Kamaru Usman–Gilbert Burns welterweight title fight was postponed.

Regardless, this fight would garner plenty of attention.

McGregor has not fought in the UFC since earning a KO/TKO victory in a welterweight fight against Donald Cerrone in January.

Poirier was bested by current lightweight champion Khabib Nurmagomedov in September of last year, but he responded by beating Dan Hooker in June. “The Diamond” is also hungry for a marquee matchup after a scheduled fight with Tony Ferguson was canceled after a dispute over compensation.

It remains to be seen whether the UFC can get the fight done, though the opportunity is certainly there for the taking.