Miller made his Football League debut on 4 December 2004 in a 2–1 defeat to Nottingham Forest, and played in more than half of the team's remaining league matches that season. By late September 2005, he had made just one league appearances since the start of the season, and was sent to Peterborough United on what was originally intended to be a three-month loan.
Miller entered the Football League on 4 December 2004 in a 2–1 loss to Nottingham Forest, playing in over half of the team's remaining league matches that season. By late September 2005, he had appeared only once in league play since the start of the year, and was temporarily transferred to Peterborough United for an initial three-month period.