On February 28, 2017, one day before the trade deadline, Fehr was placed on waivers for the purpose of being sent to the American Hockey League. He had largely been played on the Penguins' fourth line, and was seen as a player to bench once several injured Penguins' players returned from injury. In the weeks approaching the deadline, Fehr had been a frequent healthy scratch. He cleared the following day, but was then traded to the Toronto Maple Leafs, alongside Steven Oleksy and a 2017 fourth round pick, in exchange for Frank Corrado in an effort to clear cap space for the Penguins. Fehr was a healthy scratch for the Maple Leafs for nine games due to a plethora of forwards, but an injury to Nikita Soshnikov on March 20 allowed Fehr to make his season debut two nights later against the Columbus Blue Jackets. Fehr played adequately in his limited role on the fourth line but broke his left hand in the game, effectively ending his season.