(CNN) The British royal family will meet Monday to discuss the future of the Duke and Duchess of Sussex after the couple announced this week they would step back from their roles as senior members of the royal family, a palace source told CNN.

Queen Elizabeth II, Prince Charles, Prince William and Prince Harry will attend the meeting at the Queen's Sandringham Estate in Norfolk, eastern England, the source said. Meghan, the Duchess of Sussex , is expected to call in to the meeting from Canada.

Meanwhile, Prince William has expressed his "sadness" over the rift with his brother Prince Harry and that the royal family was no longer "a team," the UK's Sunday Times reported, citing a friend.

"I've put my arm around my brother all our lives and I can't do that any more; we're separate entities," the Duke of Cambridge told a friend, according to the paper.

News of the discussions taking place follows a series of meetings and consultations over the last few days. There are a range of possibilities for the family to review, considering the couple's thinking that they outlined in their announcement on Wednesday.

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