As previously reported on BoxingScene.com, eight division world champion Manny Pacquiao signed a contract with mixed martial arts promotion Rizin Fighting Federation on Monday.

While it was stated that Pacquiao would be a part of their upcoming event, no details were provided regarding the deal.

One day later, Rizin CEO Nobuyuki Sakakibara clarified the details of the agreement his company signed with Pacquiao.

As expected, Pacquiao will not be fighting at the event.

The card will have kickboxing sensation Tenshin Nasukawa facing Filipino Fritz Biagtan at the Yokohama Arena on April 21.

Pacquiao will be present at the event to cheer on his countryman, Biagtan, and also to greet the Japanese fans of the promotion.

Sakakibara did note that his company would like have Pacquiao compete in an exhibition match at some point in the future.

This past New Year's Eve, Mayweather unretired to take part in Rizin's big year-end event and faced Nasukawa in a an exhibition boxing match.

Mayweather destroyed the 21-year-old in a single round, after overpowering him and scoring three knockdowns before the contest was waved off by the referee.

Pacquiao ridiculed the fight, because Nasukawa had no boxing experience and also because Mayweather held a significant size advantage, as the Japanese star usually competes at a weight closer to 126-pounds and the contest took place at the welterweight limit of 147.

If they ever reach a deal on a potential fight, Sakakibara stated that Pacquiao would face someone closer to his weight like veteran MMA star Takanori Gomi.

“I heard (Gomi) has said, ‘I’d love to fight against Pacquiao,’ ” Sakakibara said.

Pacquiao, who dominated Adrien Broner over twelve rounds in January to retain the WBA "regular" welterweight title, is expected to compete in July in a potential showdown with Keith Thurman.

Another star that Sakakibara mentioned was UFC star Conor McGregor, who in August 2017 fought Mayweather in a cross-over boxing match that generated a fortune of revenue.

Sakakibara revealed that his company had communicated with McGregor’s management.

In January, McGregor took to social media and wrote that he wanted to "go to Tokyo to face Tenshin Nasukawa in a Mixed Martial Arts exhibition bout.”

“If we had him, we would create something completely new,” Sakakibara said. “Like Pacquiao and Floyd, he’s perhaps the only man in mixed martial arts that makes it possible. We would be able to make something that’s very interesting if he worked with us.”