 He resigned as King's Lynn manager on 8 November 2000 due to major financial problems at the club, and had made 16 appearances and scored one 1 up to that point in 2000–01.He returned to playing just three days later by signing for Football Conference club Boston United, making his debut the same day in a 2–2 home draw with Scarborough.Mills made eight appearances for Boston before being appointed the player-manager of Southern League Premier Division club Tamworth on 12 January 2001.