Michael J Fox has revealed that he's in talks to do another "Back To The Future" movie according to Moviehole.

However, Fox has a condition that his character has to have aged as much as he has in real life. The "Spin City" actor first starred as Marty McFly in 1985 followed by subsequent outings in 1989 and 1990. He admits that he's currently in negotiations for a final film in the series but wants to take over Christopher Lloyd's eccentric scientist character, Doc.

"The only way it would work would be if I played Doc. I'm 44 years old now and I'm not interested in running around on skateboards. I think after 1, 2 and 3 we all kind of felt we had done it. And I think if they did it again now, they would do it with a younger cast and just do a different realisation of it, which would be fun" says Fox.