“William is very stubborn and private," the insider recently told Us Weekly. "He keeps his movements and calendar away from Charles’ team to such an extent that he won’t listen to anyone or take guidance from [his father] or his team. He keeps things very locked down and separate.”

King Charles and Prince William have remained on good terms despite drama with Prince Harry, but one expert claims that inside sources say Harry could cause a rift between the king and his older son.