Prince William must agree on terms with King Charles before he can enter into crunch talks with Prince Harry over a possible reconciliation, a royal has claimed. The Duke of Sussex is not on speaking terms with the Prince of Wales. Harry’s relationship with his brother has deteriorated over the last few years after the Sussexes unleashed several public attacks on the Royal Family. Robert Hardman has claimed that reconciliation between Harry and senior members of the Royal Family will not work unless an agreement with Prince William is struck. Hardman said: “Whatever the King does needs to be d…