Green signed with the Montreal Alouettes in May 2007 following the 2007 NFL Draft. His first career Canadian Football League (CFL) reception came on June 29, 2007 against the Saskatchewan Roughriders. His first career touchdown was against the Edmonton Eskimos on October 31, 2008, which was the fifth game of his professional career. Green was a member of both the 97th Grey Cup and 98th Grey Cup championship team with the Montreal Alouettes.