While Game of Thrones star Kit Harington was poised to get his first feature film starring role with Arthur & Lancelot, Warner Bros. abruptly put the David Dobkin-helmed project on hold in order to sort out the swelling budget. The film isnât yet dead, but production has been pushed back leaving a hole in Haringtonâs schedule. It appears the actor was quick to fill that void, as Variety reports that heâs now in final negotiations to join the cast of The Seventh Son. The film stars Jeff Bridges as a grizzled witch hunter who takes on a new apprentice in the form of Ben Barnes. Harington will play a former apprentice of Bridgesâ character in the fantasy pic.What this means for Arthur & Lancelot is uncertain. Harington is due back on the Game of Thrones set after he wraps The Seventh Son in order to film the third season of the hit HBO series. This means he likely wonât be available until fall at the earliest (season two of GoT filmed from July to December). Depending on when/if WB starts Arthur & Lancelot back up again, Harington may find himself replaced. No matter, heâs one of the highlights of Game of Thrones and as evidenced by how quickly he found a replacement project, heâs definitely got a bright feature career ahead of him.