Parkin played for Swindon between 2002 and 2005 and managed to score 73 goals in his time, and since he left Swindon have had a problem scorng goals.
He's now playing for Luton who have just been relegated to League Two.
Andrew Fitton told the BBC: "It's not that he's not a good player. But the history of players returning to clubs and succeeding isn't very good and you need to be mindful of that."