Christopher Lloyd was concerned after Eric Stoltz replaced by Michael J. Fox in Back to the Future

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Christopher Lloyd said he was initially concerned when Michael J. Fox replaced Eric Stoltz as Marty McFly in the film Back to the Future.The 83-year-old actor, who played Dr.

Emmett Brown in the famed film franchise, spoke with GQ Monday in a career retrospective, in which he recalled how Stoltz was let go from the film six weeks into production as filmmakers 'just decided that they needed somebody with a comic flair.'Said Lloyd: 'My biggest fear was that, because I was really working to get Doc right, I thought, "I don’t know if I can get it up to do [all the scenes over] again." So I was worried about it.

But, it all worked out.' The latest:Christopher Lloyd, 83, told GQ he was initially concerned when Michael J. Fox, 60, replaced Eric Stoltz, 60, as Marty McFly in the film Back to the FutureLloyd, calling Stoltz 'a wonderful actor,' said he 'had no idea the change was coming' when he was summoned into a meeting revealing the news.'One night we were shooting the mall beginning sequence, and we were asked to come to one of the trailers at one o’clock in the morning,' he said, adding that executive producer Steven Spielberg 'was there and he made the announcement of the change.' Lloyd went on to appear alongside Fox in the 1985 hit and its sequels, 1989's Back to the Future Part II and 1990's Back to the Future Part III.'Michael, we had a chemistry which lasted the whole time,' Lloyd said. 'We could come back after the break and it would just be there.' Lloyd said he was concerned about mustering up the proper energy to reshoot the scenes Lloyd, calling Stoltz 'a wonderful actor, said he 'had no idea the change was coming' when he was summoned into a meeting revealing the news Lloyd opened up about the long term legacy.