on Tuesday that the seismic dust-up will go ahead on either August 7 or 14.
He also stated that both men were happy to trust the Saudis because they already 'delivered on every one of their promises' for Joshua's fight against Andy Ruiz in 2019.
No official announcement has yet been made but Hearn revealed last week that the deal was done.
He said: "That fight [Joshua vs Fury] is done and you'll get an announcement very soon."
The August clash will be the first in a two-fight deal , with the second bout expected to take place at the end of 2021.
It has also been reported that the fight could generate as much as £500million, with Joshua and Fury agreeing a 50/50 split.
Fury is unbeaten in 31 professional fights, with his only blemish coming in a controversial draw against Deontay Wilder in 2018, a clash many felt he won.
Meanwhile, Joshua has a record of 24-1, with his only defeat coming in shocking fashion at the hands of Ruiz in 2019.
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Hearn has confirmed the fight will take place in the first half of August Credit: /Mark Robinson#3/ Matchroom Boxing
The Gypsy King is extremely confident he will beat Joshua when they meet in the ring later this year.
Fury told the No Passion, No Point podcast: "I will cut Anthony Joshua down like a hot knife through cheese.
"That's how easy it's going to be. That's how easy it's going to be."
Meanwhile, Joshua put out a tweet on Monday night goading Fury to try and get the fight done.
He said: “'Spartan.' I’m tired. My fans are tired. Your fans are tired. We’re all tired of the talk. Less talk. More action!"
Eddie Hearn confirms Anthony Joshua vs Tyson Fury fight is done with announcement coming very soon