Complex sentence: When a pilot for an American version of the show was produced, Barrie was invited to reprise his role as Rimmer but passed up the offer because of the constraint of the five series contract which is standard for American television.
Split into simpler sentences: When a pilot for an American version of the show was produced, Barrie was invited to reprise his role as Rimmer. He passed up the offer because of the constraint of the five series contract which is standard for American television.