 After one month at "Pompey", the club extended Maguire's loan until the end of the season.Maguire impressed for Portsmouth where he scored 3 goals in 11 appearances, and picked up the club's Player of the Month award in the game against parent club Derby County (a game which Maguire was ineligible to play in) on 21 April 2012, a game which saw Portsmouth relegated in a 2–1 defeat.On 22 May 2012, Maguire was transfer-listed by Derby.