Education
He completed his studies at the Galway-Mayo Institute of Technology while playing in Ireland.
He completed his studies at the Galway-Mayo Institute of Technology while playing in Ireland.
Gaffney started his career at League of Ireland First Division team Mervue United before joining Premier League team Limerick in July 2011. On 25 November 2014 Gaffney agreed a move to League Two club Cambridge United when the transfer window opened. On 14 January 2016, Gaffney moved permanently to League Two club Bristol Rovers after a successful loan spell, After scoring 5 goals in 7 games for the West Country Club.
His first season was beset with injury and he made his Football League debut on 26 September 2015, replacing Conor Newton in the 81st minute in a 1–0 win against Stevenage at the Abbey Stadium providing the cross from which Cambridge scored. Gaffney went on to score twice on his first start for Cambridge United in the 3–2 away win over Yeovil Town on October 23.