John Lithgow, who is American, is nearing a deal to portray Professor Albus Dumbledore in HBO's upcoming "Harry Potter" series reboot, according to a report in Deadline. When reached, HBO reps declined comment on the report.

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.

And while very little about the TV run has actually been confirmed so far, a Hollywood legend is said to be nearing a deal to be cast as Professor Albus Dumbledore. Following in the footsteps of Richard Harris, Jude Law, and Michael Gambon, it seems John Lithgow will be next to play the Hogwarts head teacher.