Joshua fought more recently, in December 2020, when a ninth round knockout win over Pulev pushed his record to 24-1.
The 31-year-old is gearing up for his fight with Usyk, and admitted recently that he is both mentally and physically drained from his intense 10-week camp.
‘AJ’ acknowledged that such strain is simply part of achieving perfection in his craft.
Joshua clashes with Usyk in their world heavyweight title bout on September 25 while Fury defends his WBC title against Wilder in the third instalment of their grudge trilogy on October 9.