Conor McGregor dropped a hint he's going to fight Floyd Mayweather once again

• Floyd Mayweather and Conor McGregor are rumored to fight once again.
• The prizefighting superstars fought in 2017, with Mayweather stopping McGregor in the 10th round.

One of the best-selling combat sports events of all time may get a do-over as UFC star Conor McGregor dropped a hint that he'll fight Hall of Fame boxer Floyd Mayweather in a rematch of their 2017 showdown.

Five years ago, the prizefighting superstars fought a landmark, boxing-rules contest, which captured the imagination of the sporting public and sold to 4.3 million households in the US.

The only fight that proved more popular at the box office was Mayweather's win by decision over Manny Pacquiao two years earlier, which sold to 4.6 million households in the US.

In the McGregor bout, Mayweather stopped the former two-weight UFC champ in the 10th round before later retiring from the sport forever.

The match generated significant paydays for both athletes. Mayweather, Forbes reported at the time, banked approximately $275 million, while McGregor received "around" $100 million — more than he'd ever made for any of his MMA bouts.

Digital boxing publication Fight Hype, which has a close relationship with Mayweather, tweeted Thursday that the two fighters "are currently in talks for a potential rematch."

Shortly after, McGregor posted a photograph from his fight with Mayweather all those years ago, alongside a caption that read: "I accept."

McGregor yearned for a rematch shortly after he was beaten inside the distance.

"What's sickening me is that the little mother fucker is retired now," the Irishman said in an interview on stage with Caroline Pearce in 2017. "That's what sickening me."

He said: "I know if I went another go with him, under boxing rules, I'd get that win. I know that. I know after feeling him in that first fight, he had to change his whole approach.

"He fought completely different than he fought" before, said McGregor. "He couldn't figure out what I was doing early on. I feel with the lessons I learned, if I had another go around, I'd get it."

Mayweather has continued to secure big paydays in boxing despite hanging up his gloves as a pro.

He's taken part in exhibition bouts against Japanese kickboxer Tenshin Nasakuwa, internet celebrity Logan Paul, and his former sparring partner Don Moore, over the years.

At a Las Vegas press conference earlier this month, Mayweather told reporters he'd return to Japan for his fourth exhibition against MMA fighter Mikuru Asakura.

It is unclear if Mayweather's prospective bout with McGregor would be a pro contest, an exhibition, or if it will even materialize at all.