The former Scotland international was with Glasgow for eight seasons before moving to France to play for Montauban. After the French club's financial difficulties he played for a short spell with Newcastle Falcons.
He'll team up at Braidholm with former Glasgow forwards coach Gordon MacPherson who will be in charge for season 2010/2011.
Andy - who previously played club rugby with West Of Scotland and Glasgow Hawks - is the latest former Glasgow and Scotland player to return to the club ranks - Gordon Bulloch (West Of Scotland), Alan Bulloch (GHA) and Rory Kerr (Glasgow Hawks, West Of Scotland, Strathendrick) are just three examples from recent times.