Kammala wannan jumla: A ranar 2 ga Maris, 2015, a lokacin kakar 2014-15, an sayar da Petry zuwa Montreal Canadiens a musayar
Zaben zagaye na biyu na 2015 da zagaye na biyar na zagaye. Bayan Canadiens na bayan kakar wasa, a ranar 2 ga Yuni, 2015, Petry ya zaɓi ya ba da matsayinsa na 'yan wasa kyauta ta hanyar sanya hannu kan yarjejeniyar kwangila na shekaru shida tare da Montreal Canadiens har zuwa kakar 2020/21.