McGregor's fall from grace has been akin to a car accident: you cringe as you watch, but you can't look away either...
The swaggering Irishman was on top of the world when he floored Eddie Alvarez at UFC 205 in 2016, becoming the first fighter in UFC history to hold two belts in two different weight classes at the same time.
In fact, given the incredible amount of money he made, McGregor was still walking in rarified air following his loss to the mercurial Floyd Mayweather in a boxing match in 2017.
But his descent into page three news has been ugly, marred by the infamous dolly-throwing incident at UFC 223, sexual assault allegations, arrest for robbery and assaulting an older man in a Dublin pub.
This was all while suffering a string of losses in the octagon, culminating in a broken leg in his most recent fight with Dustin Poirier at UFC 264.
Continuing to talk a big game, McGregor has expressed interest in challenging Usman for the welterweight belt on return. Speaking on the I am Athlete podcast, Usman claimed McGregor's heart isn't in it anymore.
"He's not necessarily done, but he's done as a champion," said Usman, who's on an incredible 19-win streak that includes five title defences.
"This is my perspective, because when I fight guys, I study their hearts. When I watch fights, I watch their heart and for me, he's done. He's done, because I don't know whether the goal was to get the money.
"I don't know if that's what it was, because there's a story about him: He was broke. For me, it seemed like it was about not being broke, getting money. So I understand that. Now he's not broke. But how are you gonna be champion, because that's what drove you to become champion, because you didn't want to be broke? Now you're not broke anymore.
"He could call me out, but that don't mean he's going to fight me. It's not necessarily that they protect him, because he's bigger to where he can pick, where he can call his shots. He's that big. Conor can say, 'I'm going to fight you tomorrow,' and he's still gonna sell 1 million buys… absolutely, I'd grab that check."
On Wednesday, McGregor continued to promote his return, tweeting "The greatest and the biggest sports comeback in all of history. Will you be a witness?" along with a montage of several of his knockout victories.
The greatest and the biggest sports comeback in all of history.— Conor McGregor (@TheNotoriousMMA) August 9, 2022
Will you be a witness? ð¥· pic.twitter.com/uej8Hp6VzF