Joshua and Wilder have been involved in plenty of verbal sparring, but are yet to settle their differences in the ring.
The duo remain on a collision course, though, with Wilder having defeated Luis Ortiz on Saturday to retain his WBC world heavyweight title.
Following that fight, Wilder again called out Joshua, whose attempt to unify the division continues when he puts his WBA and IBF belts on the line against WBO strap-holder Joseph Parker on March 31.
