“One thing I can tell you is that by the end of this week Deontay Wilder will have a contract in front of him and we’ll see if he’s real.”
Hearn has previously criticised the Wilder team for appearing to do their business via social media, insisting “deals are made in the boardroom, not on Instagram”.
“If he prefers the fight in the UK, the ball is in their court. It’s up to them to choose,” Wilder added.
Wilder’s manager Shelly Finkel told ESPN they had officially accepted terms to a fight in the UK.
He said: “Deontay sent an email to Joshua [Sunday] night, and I sent one [Monday] to Barry Hearn and Eddie telling them that we officially accept the offer to fight under the terms they gave us and to send us the contract.”