Eddie Hearn, promoter for IBF, WBO, IBO, WBA heavyweight champion Anthony Joshua, is still not sold that a fight between Deontay Wilder and Tyson Fury will actually come off in the fall.

From the moment the fight was rumored, Hearn shook his head and expressed his doubts.

But, last weekend in Belfast, Wilder was ringside to watch Fury dominate Francesco Pianetta over ten rounds of action.

After the fight was over, both Wilder and Fury announced that a deal had been finalized to fight for Wilder's WBC world title in the fall.

The date is slated to come down in November, in Las Vegas, as part of a Showtime Pay-Per-View event.

Despite the announcement, Hearn still doubts the fight will actually materialize.

At the same time, he views Fury as being the perfect opponent for Wilder - to further build a potential 2019 showdown with Joshua - if the unified champion defeats mandatory challenger Alexander Povetkin on September 22 at Wembley in London.

“I have my doubts whether it will happen. It may get signed but I hope both guys make it into the ring. I think if there was one guy that we would want Wilder to fight to grow the Joshua fight, it would definitely be Tyson Fury," Hearn told Fighthype.com.

“I think it’s a bad fight for Fury at this time because he hasn’t got his swag or his flow yet. He must be getting 20 million-plus for that fight or I don’t know why he’s taking it but maybe he sees something we don’t and good luck to him. It’s a good fight for the heavyweight division.”

Hearn admits that a victory will certainly raise Wilder's position in future negotiations with Joshua. The two boxers were in talks to face each other this year, but the fight fell apart over money - as Wilder balked at a flat fee offer of $15 million.

“If Wilder wins the fight and it does good pay-per-view numbers then it certainly increases his stock in the Joshua fight. He’s still a one-belt holder but he will have increased his stock with wins against Ortiz and Fury. If Fury wins, there must be a rematch clause because it is a voluntary defence so that would slow down our fight [with Wilder]. Fury is a good fighter, very skillful, but I don’t see him beating Wilder at all at the moment," Hearn said.