Oleksandr Usyk has confirmed he is preparing for his rematch with Anthony Joshua despite having returned to Ukraine to defend his country.

Usyk outclassed Joshua to claim the WBA Super, WBO and IBF titles in a unanimous points decision at Tottenham Hotspur Stadium last September.

Joshua activated his rematch clause, but the contest was initially thrown into doubt when it appeared a step-aside deal that would have allowed Usyk to face Tyson Fury instead was in place, but that reportedly fell through when money could not be agreed with Joshua's camp. 

There were further complications added when the Ukrainian fighter returned home following Russia's invasion.

However, Usyk took to Instagram on Friday to confirm the rematch will take place and that he is preparing, posting a video accompanied by the words: "I decided to start preparing for a rematch with Anthony Joshua, a large number of my friends support me, all the rest of the good and peace, Thank God for everything."

Promoter Eddie Hearn recently said Joshua could take an interim fight if he is made to wait for another bout with Usyk, but was confident the two would face each other at the end of June.

"I do think Usyk will take that fight next, we're looking at the end of June for that fight and that’s when the fight has got to take place by," Hearn said on the DAZN Boxing Show.

"If he's not ready, we'll push for an interim fight, but my gut feeling right now, and this could change is that you will be seeing Anthony Joshua v Oleksandr Usyk for the unified world heavyweight championship next."