The Harry Potter show may be breaking a rule from the movies, but John Lithgow makes perfect sense to play Albus Dumbldore in the upcoming series.

The two-time Oscar nominee, who has played the likes of Winston Churchill and Roald Dahl before, could become the first confirmed named for the new show.

The legendary thespian was offered the role of the iconic Hogwarts headmaster - but decided he 'couldn't do it'.