Tyson Fury continued to talk up his plan to beat Anthony Joshua in a heavyweight unification bout on Monday, although a report suggested the fight was under threat.

Fury announced on his Twitter page at the weekend that the showdown with Joshua is "100 per cent on" for August 14 in Saudi Arabia.

Joshua's IBF, WBA and WBO titles and Fury's WBC belt are all set to be on the line in the long-awaited clash.

Mocking himself up as "Tyson of Arabia", in reference to the 1962 film Lawrence of Arabia, Fury posted on Monday: "Time to take back what I never lost.

"Every belt there [sic] all mine chump!"

However, the Daily Star reported a potential complication as it claimed Deontay Wilder, beaten by Fury last February following a controversial initial draw, had won his claim for a trilogy fight.

Rather than pay a sum to the American for him to step aside as Fury instead fought Joshua, the WBC champion would have to defend his title against Wilder by September 15.

Fury is undefeated after 31 career fights, with that draw with Wilder the only minor blemish on his 30-0-1 record.