Eddie Hearn has revealed Anthony Joshua and Tyson Fury have agreed on a location for a summer showdown between the two heavyweight world champions.
The rivals have a deal in place to face each other twice in 2021, though a venue and date had yet to be agreed for the first meeting.
However, having said recently he planned to present "three or four" options to both teams, Matchroom promoter Hearn confirmed on Thursday that a site has been approved and negotiations are "in a great place", having sat down with Fury while the pair have been in Las Vegas.
Joshua holds the IBF, WBA and WBO titles, while the unbeaten Fury is the WBC champion after dethroning Deontay Wilder last year.
"I don't want to talk too much about it because I think people are bored of me talking," Hearn said in an interview with Behind The Gloves.
"All I will tell you – which I haven't said to anyone yet – is that both sides have approved the site offer they want to go with. Now we are just finalising the site deal and we are in a great place.
"I saw Tyson yesterday. We had five or 10 minutes together – and it was good.
"I don't represent Tyson, so I don't know what is in his mind. What he basically cemented in my mind is that this is the only fight he wants. I know that is the same with AJ.
"We've got the offer, we all approve and we are moving forward now. We're good. I'm not going to go into where it is going to be held, but it has been agreed by both sides over the option we will take. You will get the date very soon, plus the official announcement."
Hearn also made clear that the original plan still remains in place, meaning a bout midway through 2021 will be followed by a rematch before the end of the year.
"There is no option for this fight to go at the back end of the year," Hearn said.
"That's been the hardest thing about securing the site deal ... in this world we live in today, most people would like to kick it to November or December. That's not available. It was never available.
"What was available was a summer fight for the undisputed heavyweight championship. That is what you’re going to get.
"Both guys want two fights this year – one will be in the summer, one will be in December. That's the plan."
Mayor of London Sadiq Khan said last week that the English capital is ready to host the lucrative fight, despite the restrictions in the country amid the ongoing coronavirus pandemic.
Fury's most recent three bouts have all been staged in Las Vegas while Joshua reclaimed his titles from Andy Ruiz Jr in a rematch held in Saudi Arabia in December 2019.
The 2012 Olympic gold medal winner fought once in 2020, with Joshua beating Kubrat Pulev at Wembley Arena in front of a restricted number of fans.