Although Michael Bay has not officially announced whether or not Shia LaBeouf will return as Sam Witwicky in Transformers 6, many fans are speculating that he will not. The last time we saw Sam was in Transformers: Dark of the Moon, which came out in 2011. Since then, LaBeouf has had several personal problems and legal troubles. He also said in an interview that he is done with acting. Given all of this, it seems unlikely that he would return for another Transformers movie.