Floyd Mayweather and Logan Paul can't count on Conor McGregor to be a supporter of their exhibition boxing match on June 6.
Hours after Mayweather got into a scuffle with Logan's brother, Jake Paul, at a press event in Miami, McGregor slammed the matchup in an Instagram post Thursday.
"Pro to pro it's embarrassing," McGregor wrote. "(Mayweather) will not scratch ($10 million) for this fight and he knows it. It was canceled once already. The world is watching this on Twitter.
"He'd fight a half-decent pro and command (upward of $20 million), yet it's this shit. Whatever way you spin this, it's sad. Fight someone for real, on your record, or f--- off, mate."
Mayweather, one of the greatest boxers of all time, retired from pro competition in 2017. He's set to face Paul during the legend's first athletic endeavor since a 2018 exhibition match in Japan. Paul is a YouTube star with a 0-1 pro boxing record.
On Thursday afternoon, Mayweather and Jake Paul, another YouTuber-turned-boxer, traded words before Paul snatched Mayweather's cap off his head and Mayweather attacked him. The incident happened at Hard Rock Stadium, which will host the June 6 bout.
McGregor didn't think too highly of the brawl, which appears to have been the catalyst for his social media rant.
"(Paul) curled up, didn't fight back once, and Floyd is still running around acting the tough guy," McGregor wrote. "The kid actually just pulled this shambles of a situation Floyd is in out of the drain for him. He should thank him."
McGregor has established a history with Mayweather, as the former UFC two-division champion crossed over to boxing in 2017 and lost to "Money" via 10th-round TKO in one of the biggest bouts ever.
The Irishman will face Dustin Poirier in a trilogy fight at UFC 264 on July 10 in Las Vegas.