Manny Pacquiao is not giving up until he gets that "yes" from undefeated American boxer - now retired Floyd Mayweather Jr.

Pac-Man continues to insist that they are still negotiating with Mayweather's camp, he told CNN World Sport, "It's possible -- very much, I would love to have a rematch if he wants it."

He believes that there is nothing final with Mayweather and he will later on have a change of heart.

"Of course we hear from him many times that he has retired. It's not new for him," Pacquiao said of the American.

When asked when they will announce his next opponent, he said, "late next month."

Meanwhile, ESPN's Stephen A. Smith ridicules Pacquiao's statement and he confirmed with Mayweather Jr. that he is no way returning to the boxing ring.

"I can't think so unless Floyd Mayweather is lying because he and I spoke a couple of weeks ago via text, and he emphatically stated that it was false, that there is no negotiations, that he is not fighting anymore, period," Stephen A. Smith of ESPN said via Opening Round.

He added that Pacquiao is simply desperate and he is losing respect from the boxing world.

"So why Manny Pacquiao continues to bloviate to the public about a potential rematch just speaks of desperation, because obviously he just wants to redeem himself."

"What he doesn't know is he just hurts his chances to get Floyd to give him that rematch every time he opens his mouth and speaks about that shoulder injury that he obviously had to get operated on from all those shots he was missing in the game. He [Pacquiao] just reeks of disrespect. Floyd is under no obligation to give him a rematch."