He played for Heart of Midlothian and Celtic, and later in the North American Soccer League for Philadelphia Fury and Montreal Manic.
Lynch was quickly identified as being one of the most promising Junior players in Scotland, and soon attracted interest from Blackpool, Coventry City, Dunfermline Athletic and Hearts.
After Jock Stein's departure from Celtic Park in 1978, Lynch continued at left-back (and as captain in the absence of Danny McGrain) during Billy McNeill's first season in charge of the club.
In 2008, Andy was initially the coach for Sunshine Coast F.C in the new Queensland State League (association football).
in 2010, Lynch headed a Middle East consortium's unsuccessful £400 million bid to purchase Liverpool Football Club.