He was drafted 45th overall by the Atlanta Thrashers in the 2009 NHL Entry Draft. On June 24, 2010, the Thrashers traded Morin along with Marty Reasoner, Joey Crabb, their 1st round pick (Kevin Hayes) and their 2nd round pick (Justin Holl) in the 2010 NHL Entry Draft to the Chicago Blackhawks in exchange for Dustin Byfuglien, Brent Sopel, Ben Eager, and Akim Aliu.