Foster subsequently signed for Ilkeston in May 2016, joining the club as a player-coach; the first coaching role of his career. He featured frequently during the opening months of the season, but suffered an injury in an FA Trophy defeat to Barwell in October 2016. It proved to be Foster's last appearance for the club as he left Ilkeston by mutual consent and signed for Northern Premier League side Coalville Town on 30 November 2016. He spent five months at Coalville, leaving the club in April 2017 after being appointed as Oldham Athletic's new commercial manager on 28 March 2017.