King Charles's Frogmore feud with Prince Andrew "sends a clear message" to Prince Harry, a royal commentator has claimed.
The King, 75, is said to be urging his disgraced brother, the Duke of York, to leave the 30-room Royal Lodge in Windsor, after previously asking him to move into Frogmore Cottage.
Frogmore Cottage used to be the home of Prince Harry and Meghan Markle before they moved to the US.
Royal commentator Tom Quinn claimed: "For King Charles, forcing Andrew to move to Frogmore solves several problems at once.
"It sends a message to Harry that, as a private citizen and no longer a working royal he will never be allowed back to Frogmore."
The Duke of Sussex stepped down from royal duties four years ago.
However, he continued to pay rent at Frogmore Cottage for three years, even staying at the Windsor residence during the Platinum Jubilee in 2022.
Harry and Meghan were later evicted from the cottage in 2023, following the release of the Duke of Sussex's memoir Spare.
As a result, the father-of-two has stayed in hotels during several recent trips to the UK.
Quinn continued to tell The Mirror: "It sends [a] message to Andrew that having disgraced himself, he can no longer expect to live in the grand style.
"And, finally, it means that a suitably grand residence can be made ready for the royals who really matter, William and Kate.
"Charles is determined that Royal Lodge is the only residence on the royal estate at Windsor that is big enough and regal enough for his heir."
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Prince Andrew was forced to step down as a working royal in 2019 following his disastrous Newsnight interview, where he discussed his friendship with the late convicted sex offender, Jeffrey Epstein.
He has remained living at his home Royal Lodge, where he has lived since 2003, despite stepping back from public life.
Meanwhile, Princess Kate and Prince William live in Adelaide Cottage, a stone's throw away from Andrew's home.
A royal source recently told The Times: "The King’s kindness is not without limit and there is a very good option for Andrew to move into Frogmore Cottage, recently vacated by the Duke and Duchess of Sussex, which also has the benefit of being within the Windsor Castle security cordon hence reducing the need for alternative round-the-clock security for Royal Lodge."