Only two days have passed since the release of Transformers: Dark of the Moon, and star Shia LaBeouf is already talking of his future with the franchise. The 26-year old actor has told the Associated Press that he is "done" with the franchise and that he. "doesn't have anything new to contribute." The comments came while the actor was in Moscow, Russia promoting the latest installment of the Autobots vs. Decepticons war at the Moscow International Film Festival. LaBeouf went on to say he didn't know if, ""there's anywhere to take Sam, really." Sam being the character of Sam Witwicky, the boy-next-door type he has played for the past three films. This latest edition of Transformers also saw a change in cast, with Megan Fox absent after her involvement in the first two films. Will anyone replace Sam, or will a new character be invented if there is a fourth film? Signs could be indicating an end to the franchise, as this latest film has opened 40% below the previous entry in the trilogy, Transformers: Revenge of the Fallen.