Conversation so far:
In what year did John Hartson join Luton Town?
Hartson turned professional in 1992 and made his Luton Town first team debut as a substitute in a 1–0 League Cup defeat to Cambridge United on 24 August 1993.
Did John Hartson play for Arsenal?
In total, Hartson played 53 times for Arsenal
How many goals did John Hartson score in his Arsenal career?
14 goals

Question: What year did he leave Arsenal?
Self-contained rewrite: What year did John Hartson leave Arsenal?