 Colbeck broke into the team on a more regular basis and made 11 appearances, including five starts, during the latter half of the 2005–06 season, and was one of six junior players to earn a one-year contract at the League One club.His first full season in the first team was during 2006–07, although he was kept out of the team during the early part of the season by winger Jermaine Johnson.After eight straight games as substitute, Colbeck made his first start of the season in a West Yorkshire derby against Huddersfield Town on 7 October 2006.