 Darlington made a bid to sign Colbeck on a permanent basis during January 2008, but City chairman Julian Rhodes turned down the bid, and Colbeck was a regular player for the rest of the 2007–08 season.The run of games included the third goal in a 3–1 win against former side Darlington at the Darlington Arena.On 19 April 2008, he scored his sixth goal for the club, but first in a home game, when his last minute goal gave Bradford a 2–1 win over Grimsby Town.