Tyson Fury has warned Anthony Joshua he has until Monday to sign the contract or their all-British battle is off.The Gypsy King is growing frustrated waiting on Joshua to put pen to paper as the clock ticks down to their proposed December 3 date in Cardiff. WBC heavyweight champion Fury, 34, and his team sent contracts to AJ last Friday.He said: “I was optimistic about three weeks ago but it shouldn’t be taking this long to sign a contract. “We will know by Monday anyway because if it is not done by Monday then I’m moving on.”Read More: Tyson Fury calls Anthony Joshua and Oleksandr Usyk 's***houses' 11 times in new video Fury was sat ringside at Joe Joyce’s clash with Joseph Parker in Manchester on Saturday night when he made the demand.