As captain, he helped guide Derry to promotion back to the top flight of Irish football having been demoted to the League of Ireland First Division due to financial difficulties.
[1] After retirement he began his coaching career, taking on the role of co-manager alongside Paul 'Oxo' McLaughlin at intermediate club Trojans in 2014.
There he won a treble in his first season before accepting the managerial role at Institute following the sacking of Paul Kee.
[2] After guiding 'Stute to two NIFL Championship play-offs in the 2015/16 and 2016/17 seasons, Deery resigned after failing to win promotion.
He made his return to Institute as manager in June 2023, following the resignation of Brian Donaghey.