All the news on HBO's streaming 'Harry Potter' TV series, including cast, release date, how to watch, development and whether J.K. Rowling will be involved.

The role is Dumbledore, the most central figure to Harry Potter other than the trio of Harry, Ron and Hermione. But there's a bit of a problem.

Deadline reports how none other than John Lithgow — the prolific American actor known for his roles in hit films such as “Terms of Endearment” and “Shrek” — is said to be in final negotiations to play the iconic wizard.