UFC president Dana White made the announcement during a news conference Friday (Aug. 3), revealing that McGregor-Nurmagomedov would headline UFC 229 at Vegas' T-Mobile Arena.
The "Notorious" one became the first fighter in UFC history to hold two titles simultaneously. He left the octagon for a fight against Floyd Mayweather in the Boxing ring, which the Irish lost by TKO in the 10th round.
Nurmagomedov claimed the vacant belt by defeating Al Iaquinta - a late stand-in after the withdrawals of Tony Ferguson and Max Holloway - by unanimous decision, and his first defence will be against McGregor.
How will McGregor fare against the Nurmagomedov? Last month he was sentenced to five days of community service in the United States after pleading guilty to disorderly conduct. "This is going to be one of the greatest fights you've ever seen".
In a video interview this week, the San Jose-based Nurmagomedov touted his belt and his dominance in pushing the UFC to properly pay him in accordance with McGregor, the organization's leading draw.
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Notably, there is a bit of bad blood between McGregor (21-3) and Nurmagomedov as the former had attacked a bus carrying The Eagle in Brooklyn earlier this year.
McGregor also has resolved his legal troubles after throwing a hand truck at a bus containing UFC fighters during a one-man rampage last April at Brooklyn's Barclays Center.
The UFC star has been booked to fight lightweight Dustin Poirier at UFC 230 on November 3 at Madison Square Garden in New York City. "For Khabib, who is undefeated and who is looked at as one of the best fighters in the world, beating Conor is massive for him".
White didn't disclose terms of the deal that was reached.
"I'm not fighting on that show", Diaz tweeted moments after stepping off stage, adding an expletive directed toward the UFC.