He signed a professional contract in 2004 and was tipped to be one of the "next crop of youngsters to emerge"[1] but found first-team opportunities limited and spent his first two seasons in the reserve team.
Additionally, Gardyne himself confessed to being too focus on making teammates laugh rather than performing top quality skill at training while at Celtic.
[7] Out of contract at the end of the 2011–12 season, Gardyne signed a pre-contract agreement with hometown Scottish Premier League club Dundee United in January 2012,[8] some 18 months after the move was first rumoured.
[16] On 13 March 2016, Gardyne scored the opening goal as Ross County won their first major silverware with a 2–1 victory over Hibernian in the Scottish League Cup.
[17] Gardyne was released by Ross County on 27 May 2021 along with nine other players[18] and subsequently joined Highland derby rivals Inverness Caledonian Thistle.