The fallout from Khabib Nurmagomedov's Saturday night fight with Conor McGregor continues.
Nurmagomedov defeated the Irishman in the fourth round of their eagerly anticipated UFC lightweight title fight in Las Vegas.
His victory was overshadowed by the brawl that followed.
Moments after McGregor tapped out, Khabib jumped over the octagon cage to attack Dillon Danis in the crowd.
The Dagestani fighter is expected to receive a hefty fine and a suspension for his behaviour.
In an explosive Instagram post on Thursday, Khabib threatened to leave UFC if they fire his teammate and rostered featherweight Zubaira Tukhugov.
Tukhugov, who was involved in the melee, was initially scheduled to face McGregor's teammate Artem Lobov at the end of the month.
"You canceled Zubaira's fight and you want to dismiss him just because he hit Conor," wrote Khabib in a lengthy Instagram post.
"But don't forget that it was Conor who had hit my another Brother FIRST, just check the video.
"If you decide to fire him, you should know that you'll lose me too. We never give up on our brothers in Russia and I will go to the end for my Brother.
"If you still decide to fire him, don't forget to send me my broken contract, otherwise I'll break it myself."
Respected ESPN journalist Ariel Helwani was asked on Twitter if his believes Tukhugov will be cut by UFC.
"Not when you’re as powerful as Khabib," said Helwani. "Different strokes for different folks in the UFC, we all know that.
"Just ask Paul Daley."
Helwani is probably right - Khabib is a household name in the sport right now and UFC cannot afford to lose him.
Dana White was accused of double standards earlier in 2018 after English MMA fighter Paul Daley was banned for life.
He delivered a post-fight sucker punch to Josh Koscheck - but Conor McGregor has got away with numerous antics previously.
How do you think UFC will react to Khabib's threat? Let us know your opinion by leaving a comment below.