Canada could make a request for him to serve in sentence back in Canada and could decide to release him early. However, this is not going to happen with a Conservative government in power.
Considering Harper couldn't be arsed to bring Omar Khadr[1] home, I somehow doubt they'd budge for Emery. That, and, Emery's a gigantic dick who spent years forcing the government to arrest him. He's not exactly a sympathetic character.
