The royal will speak to the TV broadcaster on the CBS program in an episode that is scheduled to air on Sunday 8 January.
A trailer clip shared on social media merely promotes the interview without offering any details as to its contents. However, a voiceover described it as a “revealing and explosive interview”.
In the short video, Harry is shown talking to Cooper while walking around a leafy garden.
In the UK, Harry is due to be interviewed by ITV’s Tom Bradby, whom the royal has known since he was a teenager. Bradby is also the person to whom Markle famously confessed she was “not OK” after he asked about her mental health during the couple’s tour of South Africa in 2019.
A broadcast date for the ITV sit-down has yet to be announced.
News of Cooper’s interview comes after sources claimed that Spare is “tough on [Prince] William in particular”.
They explained: “Generally, I think the book [will be] worse for them than the royal family is expecting. Everything is laid bare. Charles comes out of it better than I had expected, but it’s tough on William, in particular, and even Kate gets a bit of a broadside.”
“There are these minute details, and a description of the fight between the brothers. I personally can’t see how Harry and William will be able to reconcile after this.”