 On 18 October 2019, Morison announced his retirement from playing with immediate effect, in order to begin his coaching career at his first club, Northampton Town.Morison was called up to the England C team, who represent England at non-league level, in November 2006, scoring in a European Challenge Trophy game against the Netherlands in which Morison played both games against Grenada and Barbados respectively, scoring against the former in a 1–1 draw.Morison played a total of eight times for the England C side, scoring three times, before his age meant that he was ineligible to be selected.