Discovery is hard at work prepping a new show about Harry Potter, a young boy who's whisked off to wizard for seven straight books of drama and adventure. The new series would adapt the whole of J.K.

A Hollywood great who won an Oscar almost a decade ago is reportedly the top contender to play Albus Dumbledore in the Harry Potter TV show. When it was announced that a reboot was in the works, this news inevitably sparked passionate reactions from fans around the world.

Oscar-winning actor Mark Rylance is reportedly being heavily considered to play Albus Dumbledore in HBO's upcoming Harry Potter TV series.

Mark Mylod and Francesca Gardiner's upcoming Wizarding World reboot at HBO is eyeing Mark Rylance for the role of Hogwarts headmaster. Read more here.

Mark Rylance is at the top of the casting wishlist for the new HBO "Harry Potter" adaptation, Variety has learned from sources familiar with the project. Rylance, who is starring as Thomas Cromwell in the highly-anticipated BBC period drama "Wolf Hall: The Mirror and The Light" (based on Hilary Mantel's novel),

The casting for the highly anticipated TV reboot has reportedly begun and fans are suggesting some A-list actors for the series, including a former cast member

HBO is preparing a series about Harry Potter. There have been recent talks about the start of casting, and now there's a lot of buzz about the actor likely to play Dumbledore. Will he be a good fit? For years,

If all goes as planned, HBO's Harry Potter adaptation is keen on getting Mark Rylance on board as it's Dumbledore. According to Variety, he is at the top of the wishlist of HBO makers. Mark Rylance is currently starring as Thomas Cromwell in the highly-anticipated BBC period drama Wolf Hall: The Mirror and The Light.

Meanwhile, Jared Harris – son of Richard Harris, who played Dumbledore in the first two Harry Potter films – said “no thank you” to the idea, and questioned why the project was being made in the first instance.