The two will meet at UFC 196 in Las Vegas this month
Conor McGregor's previously scheduled bout against Rafael dos Anjos might not be taking place, but there's still a fight going ahead as Nate Diaz steps into the breach to face the Irishman.
With little time to prepare in camp and get to grips with each other, this is set to be an intriguing contest between the two, which might be hard to call.
However, speaking at the UFC event in London this past weekend, a number of famous faces gave their opinion on who they think will come out on top in the bout on Saturday night.
A majority call it in McGregor's favour, with a lot of them citing the fact that Diaz has rushed into camp, but there are a number of factors in play, including the jump in weight class that McGregor is taking on.