Promoter Ben Shalom of BOXXER believes Kell Brook vs. Chris Eubank Jr. is a big pay-per-view fight.

He thinks the fight is very possible to make - if both boxers are realistic with the weight limit.

Last month, Brook returned to the ring at a catch-weight of 149-pounds and stopped career rival Amir Khan in six rounds.

He's willing to move up as high as 155-pounds for a fight with Eubank, who currently competes at the middleweight limit of 160-pounds.

"The fight is very realistic, but only if they are both realistic about the weight," Shalom told Sky Sports.

"Brook is happy to be realistic by coming up from 149-pounds to 154-pounds or 155-pounds. But Eubank Jr also has to be realistic. And that involves coming down to 155-pounds."

Nisse Sauerland of Wasserman Boxing, who promotes Eubank, says there is no way his boxer could squeeze down to 155.

"If you look at what Kell is saying, the five pounds to come up to 160, is not the be all and end all," Sauerland told Sky Sports.

"It sounds like a bit of an excuse. I think five pounds isn't the biggest of deals, but I'm sure there is a discussion to be had. But I can't see [Eubank] Junior going down to 155, unless he chops an arm off."

The rivalry between Brook and Eubank began in 2016.

Eubank was in serious discussions to face middleweight champion Gennadiy Golovkin - but they were unable to reach an agreement on the terms.

When Eubank fell out, he was quickly replaced by Brook - who moved up by two weight classes to take the fight. Brook was stopped in five rounds by the bigger man.

Before and after the fight, plenty of words were exchanged between Brook and Eubank.