WWE touts McGregor-Reigns fantasy match
A possible Reigns-McGregor matchup is mentioned as part of an article about fantasy matchups on WWE.com.
Although McGregor would have the edge in the striking, speed and submission categories, Reigns would possess the size, strength and reach advantages. Those would (maybe) be enough for The Big Dog to keep The Notorious One down, but either way, it would be an event.