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), is in the mix for Dumbledore, according to inside buzz.

Variety understands that Warner Bros. Television hasn’t yet entered into negotiations with the actor, but the studio has reached out to gauge interest and availability.

Reps for Rylance did not immediately respond to a request for comment.