Conor McGregor marked his return to the octagon in style at UFC 246, defeating Donald “Cowboy” Cerrone within the opening minute in Las Vegas.It took McGregor just 40 seconds to register the 22nd victory of his illustrious MMA career.In his first fight since losing to Khabib Nurmagomedov in October 2018, the Irishman made light work of the American fan favourite at the T-Mobile Arena.McGregor, 31, landed a brutal left kick to Cerrone’s head in the opening seconds before dropping his opponent and finishing the bout.With Cerrone struggling, referee Herb Dean intervened and waved off the contest.

"I made history tonight. I set a new record. I'm the first fighter in UFC history to secure knockout victories at featherweight, at lightweight and now at welterweight - across three weight divisions, so I'm very proud of that," McGregor told reporters, per BBC Sport, after his latest win.

Shortly after McGregor’s victory, Floyd Mayweather sent fight fans on social media wild by appearing to confirm a 2020 rematch with the Irish superstar.

He posted the following on Instagram…

Now this is something we’d all love to see.

Mayweather defeated McGregor back in August 2017 with a 10th-round stoppage.

But fight fans would love to see another money-spinning crossover between the two - and it seems Mayweather might be interested in potentially testing himself in the octagon.

The 42-year-old, one of the best pound-for-pound fighters of all time, still keeps himself in great shape and, as we all know, loves nothing more than making big money.

So watch this space…