King Charles may "abdicate the throne when he is 80" and leave the throne to his eldest son, Prince William, Daily Express cited a royal author on Friday.
These claim came five months after the King's coronation.
The day was filled with regal splendour, with royals turning up in all their finery and Britons partaking in street parties to mark the beginning of the monarch's reign.
Clive Irving, the author of "The Last Queen," said: "I think Charles feels it's his duty to serve having waited so long but he also knows he is the oldest person ever to have been Coronated."
Irving added: "I think it may already be surreptitiously planned that he will abdicate when he is 80," adding: "I think the deal has been done that when Charles is 80, he will quit and hand over [to William]."