There's a lot of beef to be settled in the octagon with these two fighters having a very colourful past.
Remember all this earlier in the year?
Well tomorrow night in Las Vegas, the ultimate grudge match is taking place as Conor McGregor takes on the undefeated Khabib Nurmagomedov in the UFC 229 Lightweight Main Event. And sparks will fly!
Offtheball.com's Darren Cleary has an 'All You Need To Know' guide for the fight night, which is scheduled to air BT Sport 1 @5am Sunday morning (Irish time).
The sports journalist compares their contrasting fighting styles and fears for the Notorious. Speaking about Khabib, he says, "he's a pound and ground guy", and that's McGregor's weak spot.
It's hard not to be a beast of a wrestler when this is you as a kid...
How good a grappler is Nurmagomedov? Ask the bear... #UFC229 @DermotTodayFM @DaveTodayFM @TodayFM https://t.co/Ed3rmVKn1P pic.twitter.com/ciKOzLi6mw
— Darren Cleary (@RadioCleary) October 5, 2018
Dermot and Dave also debate whether the whole bus smash up was a publicity stunt or not, but Darren feels it's all real, "when he says he really doesn't like Khabib, I think he's serious".
The Irishman isn't in it for the money and the Russian has a 26-0-0 record to protect - add that to all the bad blood between them and we've got ourselves a good old fight to the death.
Check out the chat in full by pressing the play button in the image at the top of the page.
