 However, on 21 May 2017, Mills' York beat Macclesfield Town 3–2 at Wembley Stadium in the 2017 FA Trophy Final.Mills was dismissed by York on 30 September 2017, on the same day as a defeat to South Shields in the FA Cup third qualifying round.A club statement read that "the current league position is unacceptable", with York seventh in the National League North and 11 points away from the only automatic promotion place.