20-year-old Gary began his career as a youth player with Celtic before moving to Hamilton Academical.
Gary made his Hamilton debut against Livingston in August 2011 and made 14 first team appearances during the 2012-13 season. He had attracted interest from Bolton during the January of that season but initially rejected a move to the English side.
After spending the summer of 2013 at Firhill after leaving Hamilton Gary featured in the friendly matches against Gateshead and Annan; scoring twice in the 5-1 winner over the latter.
Bolton though had rekindled their interest in Gary and he signed a two year contract with the Championship side.
He was however, allowed to return to Thistle on loan and after spending the first half of the season at Firhill he returned on a permanent basis during the January on a two and a half year deal.
Gary scored twice during his first season at Firhill including a vital goal of the season in the match at Tynecastle which secured safety in the Premiership. Gary signed an extended contract until 2017.
Gary endured a disappointing season in 2014/15 as a fractured knee cap brought to an end his impressive early season form. After working his way back into the first team picture he found himself out of the side as manager Alan Archibald tweaked his side following a poor run of form.
The start of the 2015/16 season was equally frustrating for Gary as he suffered an ankle injury in early August which sidelined him for a lengthy spell, forcing him to watch on from the stands.
