Floyd Mayweather: Conor McGregor fight is possible

Floyd Mayweather Jr. isn't shooting down rumors that he might come out of retirement to fight mixed-martial star Conor McGregor.

"It's possible. It's possible. There was a name that was shot at me," Mayweather said Saturday in a video posted on the boxing website FightHype.com. "But the rumors that y'all have been hearing (are) the rumors I started. It may not be a rumor. Keep your fingers crossed.

"It may be a boxer versus an MMA fighter. So we just don't know."

British newspaper The Sun reported last week that an agreement in principle between Mayweather and McGregor was reached May 2, with the fight schedule to take place this summer. Mayweather reportedly would take home $100 million from the fight while McGregor would earn $7 million.

"Floyd went mad after Conor said he would crush him and knock him out in 30 seconds, he's obsessed with making Conor eat his words," a source told The Sun.

"Floyd is calling the shots. It's strictly boxing, and Conor will have to lose roughly 25 pounds."

McGregor said in an interview in April 2015 that he would beat Mayweather in a hypothetical matchup.

"I would kill him in less than thirty seconds," McGregor told Esquire. "It would take me less than thirty seconds to wrap around him like a boa constrictor and strangle him."

On Saturday, McGregor, 27, posted a mock promotional poster for a Mayweather-McGregor fight on his Twitter account with the caption "MMA Vs Boxing."

Mayweather, 39, has won 12 world titles in five weight classes. He announced his retirement after defeating Andre Berto on Sept. 12, 2015 -- a victory that tied him with late heavyweight champion Rocky Marciano with a perfect 49-0 career record.

"It's not important," Mayweather told FightHype.com about the prospect of bumping his record to 50-0. "I didn't let a sport retire me. I was able to retire from a sport and quit at my own terms."

McGregor, who last fought as a featherweight, owns a 19-3 career MMA record with 17 knockouts. He took his first Ultimate Fighting Championship loss on March 6 against Nate Diaz at UFC 196 in Las Vegas.