The chances of Daniel Radcliffe returning to the franchise in either his previous role or in this subverted concept are slim. Radcliffe shared in an interview with ET Online that he fully supports the upcoming Harry Potter TV reboot but does not see himself returning as Harry.

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),

HBO’s invisibility cloak is starting to come off of the top-secret Harry Potter series casting process, and it makes sense that we would start with our fifth (fifth!) Dumbledore in less than 25 years.

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

The upcoming HBO Harry Potter series is coming together as a name for Dumbledore has surfaced: Oscar winner Mark Rylance. Variety first reported the development. Rylance is “at the top of the casting wishlist” for HBO’s upcoming Harry Potter series.

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.