The British Boxing Board of Control (BBBofC) hopes to resume professional boxing in Britain in July but with strict social distancing measures and behind closed doors.
Hearn had discussed the possibility of the heavyweight showdown between Dillian Whyte and Alexander Povetkin being the first major fight to be staged behind closed doors.
And while the Matchroom chief says that fight could be part of a spectacular month of boxing at his headquarters in Brentwood, Essex, he has urged Joshua to concentrate on preparing for a fight against the Bulgarian in front of a large crowd.
"Ninety per cent of fighters are ready to go," Hearn told IFL TV.
"They want to carry on their career. I was talking to AJ, AJ wants to fight here at Fight Camp. I don’t think that’s necessarily an option. But he wants to fight.
"This is what he does, I want to go back to the office, I want to go back to work. That’s what I do.
"I’m sure fighters would prefer to fight in front of live crowds, of course you would. That’s not going to be an option in the interim and may not even be an option until next year.
"So, be a pro, get prepared and get a fight in the bank. Get your money in the bank, progress your career and let’s go."