Coyle was a "teak tough" wing-half with Ballymena United, Glentoran, Sheffield Wednesday and Grimsby Town.
In 1990, Coyle was appointed manager of County Down club Ards after leaving Linfield but he resigned the following year.
He stayed for two years and won the League of Ireland Cup as well as guiding the team to the runner-up position in 1991–92.
A year later Coyle was linked to a move to Glenavon but the job went to former Cliftonville and Coleraine manager Marty Quinn.
Coyle took charge of the team during Glentoran's Europa League qualifications while Young was completing his coaching badges.
Coyle was in charge of first team duties until 22 February when former Cliftonville manager Eddie Patterson was appointed new Glentoran boss.
Coyle is the most successful manager in Irish League history and has won 50 trophies in a success-filled career, mostly with Linfield and Glentoran