Conor McGregor has admitted that his fight with Dustin Poirier is for 'all of the marbles', with many believing this bout is a must-win for the Irishman.

McGregor is 1-2 since returning to the sport after his boxing match with Floyd Mayweather, having been stopped by Khabib Nurmagomedov and Poirier either side of a win over Donald 'Cowboy' Cerrone.

And despite talks that this match could see the winner heading for a shot at the lightweight title, and the newly-crowned champion Charles Oliveira, McGregor could be left at a crossroads if this doesn't go his way.

He's the richest athlete in the world over the last year, according to Forbes , and broke records with his earnings outside of the octagon, so he doesn't need to fight any more, especially considering his newborn third son Rian McGregor.

Here are a few of his options if the result doesn't go his way against Poirier...

Another defeat to Dustin Poirier could leave Conor McGregor facing a big decision on his future
Another defeat to Dustin Poirier could leave Conor McGregor facing a big decision on his future

Fight Nate Diaz

McGregor v Diaz is one of the fan favourite rivalries in the sport of mixed martial arts, and that trilogy is always there for both men.

Neither fighter has had a fantastic few years in the cage, but they don't need monster win streaks to provide supporters with a reason to finally find out who is the better fighter.

Diaz won their first bout at UFC 196, although McGregor was jumping up two weight classes to face a much bigger and stylistically different opponent than when he took the bout after Rafael Dos Anjos pulled out of their scheduled fight for the lightweight title.

Then McGregor went back to the drawing board, got comfortable at 170lbs, and defeated his rival at UFC 2020 later that year to set himself up for another lightweight title shot.

Fight Jake Paul

Jake Paul has been calling out McGregor
Jake Paul has been calling out McGregor

YouTube star Paul has pretty intensely gone about calling out McGregor over the last eight months, ever since his viral knockout of Nate Robinson last November.

The bout would probably happen in boxing, and likely under some sort of exhibition rules similar to Logan's recent bout with Floyd Mayweather due to the size difference.

Paul believes that from what he has seen of McGregor in the boxing ring that he has the requisite skills to beat the Irishman, and has investors willing to pay the former two weight UFC champion $50million to do the fight.

This is probably the least likely option of the five.

Retire

Conor McGregor has 'retired' multiple times before
Conor McGregor has 'retired' multiple times before

McGregor has announced his retirement from the sport of MMA multiple times, and we wonder even if this were the avenue he took, would it be a case of the boy who cried wolf?

McGregor, as we have mentioned earlier, is the richest athlete in the world. He sold his whiskey company Proper 12 for an exorbitant 9-figure sum, and still owns a piece, as well as a number of other businesses.

He absolutely doesn't need to fight any more, even against Poirier, but he has previously said that he will never be fully retired from the sport, particularly after making so many announcements of it already.

Move over to WWE

The door appears to always be open for Conor McGregor to come to the WWE whenever he decides to make that switch.

Tyson Fury has done it, McGregor's old rival Floyd Mayweather has done it and Ronda Rousey made a big name for herself in the wrestling ring.

There are a number of former MMA personalities around the WWE at the moment, with ex-fighter Matt Riddle currently on the Raw brand and commentator Jimmy Smith involved on commentary.

Switch to boxing

Conor McGregor is 0-1 as a pro boxer
Conor McGregor is 0-1 as a pro boxer

This is probably the most likely outcome for McGregor, with a fight against Manny Pacquiao still potentially on the horizon once they've fought Poirier and Errol Spence respectively.

The Irishman reportedly was ready to prepare for a Pacquiao bout prior to the coronavirus pandemic, and he leaned heavily on boxing sparring ahead of his rematch with Poirier.

He's left legendary boxing coach Phil Sutcliffe at home for preparation ahead of Poirier 3, but he would get back with the Crumlin Boxing Club coach in the case of a return to the boxing ring.

McGregor is 0-1 as a pro after fighting Floyd Mayweather in his debut back in 2017, which was the second biggest boxing match in history.