 He made his debut for the club in a 1–1 draw with Hearts on 18 August.He scored an own goal in a 4–0 defeat against Rangers on 1 September 2007 at Ibrox Stadium.Following his release by Gretna, Collin spent a week on trial with English Championship club Blackpool, having also been on trial with fellow Championship clubs, Preston North End, and later, Wolverhampton Wanderers.