Over five years ago, before all the fame and fortune, Conor McGregor was a rising star within UFC.
In just his second fight for the promotion, the 'Notorious' was pitched against Hawaiian Max Holloway, far from a rookie at the time with five fights under his belt, and had just been on the losing end of a split decision with Dennis Bermudez months prior.
The outcome of their August 2013 fight was a convincing win for McGregor, but a respected coach within the world of MMA has had his say on a potential rematch.
Firas Zahabi, head coach of Tristar Gym, which is home to Rory MacDonald and Georges St-Pierre, hosted a question and answer session on YouTube, and when asked about a potential rematch between Holloway and McGregor, he had a clear idea of who would be victorious.
“If I had to pick Max Holloway vs. McGregor today, I would pick Max Holloway,” stated Zahabi, per Bloody Elbow.
“I think Holloway has grown leaps and bounds since then. In my opinion, Holloway would outpunch him, outwork him. He would do very much what Diaz did, but more.
“I think McGregor got away with a lot of stuff, like the leg kicks against Diaz, but I don’t think he’ll have that against Holloway.
“I think the blueprint for beating McGregor is more well understood by the roster. I really think Holloway now is in his prime, and it’s going to be very, very difficult to beat him.”
And McGregor issued a simple tweet to respond to Zahabi's claims - he's clearly not a fan of what's been said.
McGregor posted: “Hey firaz. Young man afraid to get in and fight, himself. Stop talking about me like you know me, you twerp. You are what age? Why are not in there yourself? Are you not up to it? You rent dorms and hit a clock for a living. Shut your pie, kid.”
Despite calling out Tenshin Nasukawa to an exhibition MMA fight, McGregor still has his eye on a UFC return once the legalities of his fight with Khabib Nurmagomedov are settled - and clearly believes the 'Blessed' one can be beaten.
And it would be a dream fight should McGregor go back down to Featherweight and take on a much-improved Holloway, who is now on a five-year, 13-fight winning streak.
The cynics in some can't see McGregor ever going back down to that weight, but there's no reason why MMA fans around the world can't dream.