Massey opened his scoring account in the second game of the 2013–14 season, providing the only goal in a win against Port Vale at the Community Stadium on 10 August 2013, turning in Jabo Ibehre's rebounded effort from a Chris Neal save.
In January 2010, MK Dons announced that Johnson was to join League One Stockport County on loan for the remaining six months of the season, alongside teammates Jabo Ibehre, Danny Swailes and Richie Partridge.