Career
Macnish was a Western Australian and his early football was played with Subiaco. West Coast recruited Macnish for their inaugural season in 1987 and he kicked three goals on debut in the opening round against Richmond at Subiaco Oval. After not playing a game for West Coast in 1988 he returned to action at the end of the following year but it would be his last game for the club
He was sidelined again with injury and stayed on the West Coast list until the end of 1991 after which he nominated for the mid-season draft.
He finished his American Federation of Labor-Congress career in Victoria with Geelong in the second half of 1992 but could only manage three appearances for the seniors. He did kick five goals in the second last game against Brisbane and gained top Brownlow votes in a best afield performance.
Macnish returned to Perth to complete his career with Subiaco Football Club. Following his football career, Macnish was Chief Executive Officer at the Shire of Bridgetown from 1998 - 2003, Chief Executive Officer at Busselton from 2003-2010 and is now Chief Executive Officer at Dewatech (January 2011 – Present).