For McGregor (21-3), it will be his first MMA fight in almost two years and first time in fighting action since his professional boxing debut during a heavily-hyped fight against Floyd Mayweather Jr. last August - which he lost via TKO in the 10th round.
Nurmagomedov had won the lightweight title UFC 223 in April.
McGregor will avoid jail time and instead serve five days of community service and attent anger management classes. As expected, Dana White hosted the UFC 25th Anniversary Press Conference, and he was joined on stage by a litany of MMA fighters, including Tyron Woodley, Darren Till, Nicco Montano, Valentina Shevchenko, Derek Brunson, and Israel Adesanya.
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McGregor and Nurmagomedov will meet in the main event of the UFC 229 pay-per-view show at T-Mobile Arena, the same spot where Mayweather stopped McGregor in the 10th round of their one-sided fight.
Nurmagomedov, whose rise to prominence has been more of a slow burner in comparison to McGregor, was touted as an opponent when his foe first became lightweight champion.
The undefeated Russian fighter challenged McGregor for a fight after the incident, which White had labeled "the most disgusting thing ever happened in UFC history".
Conor McGregor will return to the UFC Octagon for the first time in nearly two years in October. So what sort of food does a former two-weight UFC world-champion fighter eat? It likely won't match 2017's biggest fight in terms of revenue, but it's a far better fight, if you ask me.
As it played, Diaz abruptly left the presser he was at and tweeted "I'm not fighting on that show (expletive) the UFC". The popular Diaz (19-11) hasn't fought since that majority-decision loss to McGregor in August 2016, but he agreed to fight Dustin Poirier in a lightweight bout in NY at UFC 230 on November 3.