The Londoner is understood to have raked in around £3million for the seventh-round destruction of Dillian Whyte at London's O2 earlier this month.

Unbeaten Joshua recently signed a five-year deal with promoter Eddie Hearn of Matchroom that included a cut of the pay-per-view sales, and that has led directly to the big numbers many fighters can only dream of.

The 18,000 capacity O2 sold out within six hours for the bout against Whyte and pay-per-view sales have been described as "staggering".