Kevin McKidd, the actor who recently left Grey's Anatomy, has responded to speculation that he might play Arthur Weasley in HBO's upcoming Harry Potter series. The speculation has been fueled by the fact that McKidd was nearly part of the original adaptation of J.K. Rowling's books for the series' final two films: Harry Potter and the Deathly Hallows Part 1 and Part 2. McKidd expressed his excitement about the possibility of playing a werewolf character in the series, likely referring to the role of Fenrir Greyback. The casting for Arthur has not yet been announced.