Harrison, 23, comes to Adirondack to begin his first full professional season after he made his professional debut a season ago. Harrison appeared in four games with the Thunder last season and collected two assists and five penalty minutes.
The Duxbury, Mass. native joined the Thunder in March following a four-season career at Colgate University, where he led the team in goals during his senior season. Harrison netted 53 points (26g-27a) throughout his collegiate career, with his 20 points (11f-9a) during the 2016-17 season placing second on the team in scoring. Harrison was a sixth-round selection (157th overall) of the Calgary Flames in the 2013 NHL Entry Draft.