Eddie Hearn isn’t entirely sanguine on the economic potential of the undisputed lightweight rematch between Devin Haney and George Kambosos.

Hearn, the head of Matchroom Boxing and Haney’s former promoter, thinks the dominant fashion in which Haney defeated Kambosos in June at Marvel Stadium in Melbourne, Australia, to unify all four belts in the lightweight division, has spoiled the public appetite—and hence financial upside—for a return bout.

In order to fight Kambosos, Haney signed a multi-bout agreement with Top Rank and DiBella Entertainment and agreed to an immediate rematch with Kambosos in the event that Haney won. Their rematch is reportedly set to take place Oct. 16 at Rod Laver Arena in Melbourne, Australia.

Hearn has no involvement with either fighter, but he noted that, as someone who tried to bid for the first Kambosos-Haney fight, he was intimately aware of the financial figures that were swirling around at the time. To that end, Hearn was a bit dour on the potential of the rematch.

“That’s a tough one,” Hearn told IFL TV. “When they signed that deal—obviously I was competing in that deal, so I know the numbers. They’ve got to find a way to find the money to do Kambosos-Haney in Australia.

“The fight is not appealing because of the first fight. So I don’t know who’s gonna pay for that fight, and that means it’s going to be difficult, because if you’re George Kambosos, he must make sure that he gets that rematch in Australia because that’s what was agreed. But I don’t know where they get the money from to do it.”

Hearn’s point about Haney's dominance in the first fight has not been lost on some observers, including Bob Arum, the head of Top Rank, who suggested not long ago that it might be worthwhile for Kambosos to consider a tune-up first before heading into a rematch straightaway.

Haney defeated Kambosos, 29, by unanimous decision before a record crowd of 41,120 at Marvel Stadium. Rod Laver Stadium is considerably smaller, but can accommodate up to nearly 17,000 fans.

For Hearn, whatever the economics of the rematch, Haney is in cruise control: The 23-year-old is poised to pick up another big paycheck with the confidence that he can hang another win over Kambosos.

“If you’re Devin Haney you’re sitting pretty because you’re saying I’m gonna make a fortune in the rematch and I won the first fight easy and I’m gonna win the second fight easy,” Hearn said. "So I don’t know. Again I’m not involved in any way but it’s a bit of a—I could see how that throws out some problems, but maybe they get the funding and they just roll onto October.”