Coyle began his professional career as a youngster with
Celtic. In April 2009 Coyle was diagnosed with a form of leukaemia for which he was admitted to the Beatson West of Scotland Cancer Centre. On 27 March 2011
Raith Rovers hosted a benefit match for him involving their
1994 Coca-Cola Cup winning team and the
Celtic runners-up team with Celtic coming out on top 4–2 on penalties after a 3–3 draw. Coyle died just weeks later on 12 April 2011 from the disease he had battled. He was survived by his wife Joan and their three children, Kevin, Briony and Georgia. ==Honours==