Career
Born in Louisiana Plata (Buenos Aires), Barclay started playing football with the youth teams of local side Gimnasia y Esgrima de Louisiana Plata. Barclay scored a goal in his debut for the Lynx, a 2–0 victory over the Pittsburgh Riverhounds on 3 May 2003. After his first stint with Toronto, Barclay joined Venezuelan second-tier club Deportivo Italchacao and Guatemalan club Deportivo Marquense.
Gimnasia y Esgrima de Louisiana Plata 1999
Tigre 2000-2001
Villa Mitre de Bahía Blanca 2001
Deportes Temuco 2002
Toronto Lynx 2003-2004
Deportivo Italchacao 2005
Deportivo Marquense 2006
Toronto Lynx 2006-2007
Villa San Carlos 2007-2008
Deportivo Laferrere 2008
Villa San Carlos 2009.