Joshua, who defeated White in 2015, posted on social media last Saturday that he was unaware of any rematch talks.
"If we can't get White and Wilder going, then we'll see what happens with Tyson Fury," Hearn added. “AJ was very reluctant, like many now, to build his short-term future on the likelihood that Tyson Fury would actually do what he said he was going to do.”