sentences:  McStay managed Celtic between 9 February 1940 and 23 July 1945.However, this coincided with the suspension of the Scottish Cup and Scottish Football League during wartime, meaning he never had the opportunity to manage the club in competition.He also managed Alloa Athletic prior to his appointment at Celtic, and afterwards took charge of Hamilton Academical (where he had also finished his playing career, appearing for "Accies" in the 1935 Scottish Cup Final aged 40).