Representatives of Anthony Joshua and Joe Joyce have confirmed that the two heavyweights will be sparring in preparations for their anticipated heavyweight clashes before the end of 2020.
Joshua and Joyce have previously undertaken several rounds of sparring together during their years as part of Team GB's amateur programme and for competition in the Olympics.
'The Juggernaut' has also worked with Tyson Fury in recent times as part of his preparations for Deontay Wilder late last year, but will now aid the two-time world champion Joshua in his mandatory defence, before potentially a history-making British clash between Joshua and Fury in 2021.
Matchroom promoter Eddie Hearn spoke of the pairs history previously and believes that they will be a great match in heavyweight work, and will be able to test each other to the limits in order to achieve greater results in their upcoming fights.
He told Sky Sports: "There've been many bruising sessions over the years, Joe has been around for many years on the amateur scene. When AJ was coming through, Joe was one of the experienced guys and some of their spars have been fantastic. Obviously AJ went to another level, but Joe is still an outstanding heavyweight."
"I think the research will be in place to identify probably half a dozen sparring partners that will be the right style for Pulev, the sparring for Andy Ruiz, first time around, was so difficult because we had five weeks to find a short - sorry Andy - tubby, fast heavyweight with great movement. It's very, very difficult to find.
"We got it perfectly right for the rematch. We really brought in five or six guys that had the speed, had the movement, and replicated the style. Against Pulev, it's a little bit easier, taller, stand up, more of a European style, traditional heavyweight and they've already identified a lot of those guys to get in.
"Camp is underway, to be honest. Camp has been underway for the last few weeks. He'll be moving up to Sheffield soon. I've not seen him this excited for a long time."
Anthony Joshua is likely to face Pulev in December awaiting confirmation, despite reports that Joshua could face legal action if he decided to avoid the mandatory challenger in December after previous arrangements had already been signed.
While Joyce's preparations have been hampered in recent weeks after Frank Warren expressed his doubts that the fight can take place in London without a crowd present due to the ongoing financial struggles as a result of the global pandemic.