By Miguel Rivera

The HBO Pay-Per-View undercard is nearly finalized for the middleweight rematch between IBO, WBC, WBA world champion Gennady Golovkin and Mexican superstar Saul "Canelo" Alvarez.

The rematch is scheduled for September 15th, at the T-Mobile Arena in Las Vegas.

Canelo vs. Golovkin II is one of the more anticipated fights of the year and takes place during Mexican Independence Day weekend.

Golden Boy Promotions is the lead promoter of the event, and they are finalizing the details for the PPV card.

Eric Gomez, president of Golden Boy, is hoping to cement the necessary details to officially announce the middleweight scrap between David Lemieux and Spike O'Sullivan, the return of four division world champion Roman 'Chocolatito' Gonzalez, and the next defense by WBO junior middleweight world champion Jaime Munguia.

"What we are looking for at Golden Boy is for September 15 to be one of the best events ever, starting with the stellar fight between Canelo and Golovkin. For us, this event is our 'Super Bowl.' There will be prospects, new champions, consummate champions, we want to be proud of this event," said Gomez to ESPN Deportes.

"From Golden Boy's very beginnings, we always want good fights. The one with Lemieux and O'Sullivan is a very attractive fight. The people that know them know that they like to come forward and the two of them are going to put on a show, because there is also a big fight at stake [for the winner].

"We are also talking to Zanfer, hoping to finalize Jaime Munguía for the card, we are still finishing up the negotiations with other fighters.... like 'Chocolatito' Gonzalez - and we are very close with that. We are finalizing everything and we hope that by the end of this week we can give something official."

Regarding Munguia, there is talk that the Mexican slugger might face Canadian contender Brandon Cook, who last month was scheduled to fight Kell Brook but the fight fell apart due to injury. And as previously reported on BoxingScene.com, Chocolatito would face former world champion Moises Fuentes.