It's the fight everyone wants to see. Even Amir Khan, who just got knocked out cold.

The sports world is calling for Canelo Alvarez to fight undefeated middleweight champ Gennady Golovkin after Alvarez flattened Khan with a brutal KO on Saturday night.

And the fans are not alone: The WBC has said it will take the title from Alvarez if he does not begin talks for a fight with Golovkin within 15 days.

More from FoxSports

Alvarez obliged his fans, calling Golovkin into the ring and then calling him out in a passionate speech.

Triple G is the last man standing in the ring. Still smiling. pic.twitter.com/uQSn92Hrmp

— Arash Markazi (@ArashMarkazi) May 8, 2016

Then Golovkin took to Twitter to declare he's ready.

Big respect to all fighters tonight. I am ready, @Canelo. #CaneloKhan 👊👊👊

— Gennady Golovkin (@GGGBoxing) May 8, 2016

But there's still the issue of what weight they'd fight at. Golovkin said he wants to fight at the 160-pound middleweight limit; Alvarez wants to fight at a lower weight.

"I am old school," Golovkin said just before the fight. "Middleweight is 160. I respect the sport of boxing."

However, Alvarez vowed that weight won't be an obstacle to getting a deal done, and said his team would be sending an offer to GGG's camp.

"For me, there's no issue. I'll fight him at 160, now we're going to talk about it with my team," @Canelo

— Lance Pugmire (@latimespugmire) May 8, 2016

"There's not going to be any issue, not a weight issue, we're going to make an offer," @Canelo says.

— Lance Pugmire (@latimespugmire) May 8, 2016

Canelo says he has "no issue" fighting @GGGBoxing at a 160-pound limit. That's huge. If true, an enormous obstacle has been removed.

— Chris Mannix (@ChrisMannixYS) May 8, 2016

Canelo says he is willing to make GGG an offer for a fight in the fall. "I'll be happy not just to fight him, but to beat him."

— Chris Mannix (@ChrisMannixYS) May 8, 2016

His promoter, Oscar De La Hoya, also indicated that Golden Boy Promotions is ready to discuss a deal.

Oscar De La Hoya: "Golovkin, make sure you answer your phone in the morning. We will call you."

— Arash Markazi (@ArashMarkazi) May 8, 2016

Oscar De La Hoya isn't talking to Miguel Cotto. Only focus is Triple G right now. "That's the fight you all want to see, right?"

— Arash Markazi (@ArashMarkazi) May 8, 2016

But De La Hoya made it clear he feels he's holding all the cards.

De La Hoya said he's clearly empowered by popularity of @Canelo in GGG talks. "I have four aces and they have a pair of twos," he says.

— Lance Pugmire (@latimespugmire) May 8, 2016

Still, an Alvarez-Triple G fight would be huge, and De La Hoya told reporters he's considering some big venues for Canelo's next fight.

De La Hoya said he'll fly to Dallas to discuss an Alvarez-Golovkin fight. Jerry Jones was at the fight tonight. "It's a huge possibility."

— Lance Pugmire (@latimespugmire) May 8, 2016

De La Hoya said Dodger Stadium could also be in play for @Canelo @GGGBoxing

— Lance Pugmire (@latimespugmire) May 8, 2016

Oscar said he'll consider Dallas, LA and other locations for Canelo's next fight but he called Vegas, MGM and T-Mobile Arena Canelo's home.

— Arash Markazi (@ArashMarkazi) May 8, 2016

Fight fans hope they don't have to wait as long for Alvarez-GGG as they did for Mayweather-Pacquiao. But while the passion dictates getting a deal done, the money may dictate something different. Teddy Atlas, for one, says there's no way the fight happens.