The head of Showtime Sports said in a recent interview that Floyd Mayweather Jr. will fight for the last time in September. The disclosure by Stephen Espinoza  is not surprising and consistent with what Mayweather -- the world's No. 1 pound-for-pound boxer -- has said after the May 2 mega-fight with Manny Pacquiao.

“Yes, Floyd has continued to tell us that he intends to fight Sept. 12 and that it will be the last fight of his career. So we are beginning the very preliminary preparations for exactly that,” Espinoza told “We will be getting into discussions about an opponent for him very quickly. We will look to ride the momentum of this event and capitalize on the fact that Floyd has now distinguished himself as the fighter of his era.”

In the same interview, Espinoza was asked about the possibility of a Mayweather-Pacquiao rematch and the cable channel head said that they “have to remain open to it.”

“There’s a lot of chatter on both sides about the possibility -- once Manny successfully recovers from [shoulder] surgery, if there is a demand and if Floyd is still active or would consider coming back to being active, then it would be a topic of conversation. But it will be driven by demand,” Espinoza added.

Pacquiao underwent shoulder surgery immediately after the May 2 fight and is pegged to be out six to nine months, according to reports.

With the estimated recovery time for Pacquiao, a rematch with Mayweather is not possible by September. However, other probable opponents for Mayweather’s farewell fight include likes of Britain's Amir Khan or a rematch with Mexico's Canelo Alvarez, who is considered one of the top challengers for Mayweather’s best pound-for-pound crown.