McGregor (21-3) rose to prominence by first knocking out reigning featherweight champion Jose Aldo in a record 13 seconds in 2015, then becoming the first to hold two belts in November 2016 by knocking out lightweight champion Eddie Alvarez in the second round at Madison Square Garden.
Around this time a year ago, McGregor was in Los Angeles alongside Floyd Mayweather at a massive press event.
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.
McGregor ultimately received a plea deal and was sentenced to five days of community service and ordered to attend anger management courses.
"No, we don't have time for a World Tour", White confirmed at the UFC 227 post fight press conference.
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A press conference on Friday to mark UFC's 25th anniversary was drawing to a close when White said: "We have one last thing we want to show you".
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.
How will McGregor fare against the Nurmagomedov?
Former two-weight world champion McGregor has wanted to face Nurmagomedov for some time. Mayweather vs. McGregor was an event first and foremost, and whether or not a competitive fight ever came out of it was never really the point.
Abdulmanap Nurmagomedov confirmed that his son would be preparing for the bout in the U.S., and that Russian Federation "has the right to expect victory" from a man who is unbeaten in 26 fights in the UFC.
A out between these two rivals has been on the cards since UFC 223, when McGregor attacked a bus which contained Nurmagomedov. The lightweight title bout will headline UFC 229.