Now, the Leafs will have to make some serious decisions ahead of the postseason as Jarnkrok and Marner both get set to make a potential return. With Nick Robertson in the lineup, the Leafs simply don't have enough roster spots for all players if Jarnkrok were to come off the LTIR. However, the Leafs could elect to keep Jarnkrok on the injured reserve list until the playoffs begin, otherwise, they would have to send either Knies or Robertson to the AHL on a purely paper transaction that would not be a fan favourite move.
The Leafs have always struggled with depth scoring in the playoffs. Jarnkrok is a skilled forward who can play up and down the lineup, however, if you look at the scoring pace and even production in the playoffs, it may be more beneficial for the Leafs to go with Knies and Robertson. Knies had 4 points in 7 playoff games last year before getting hurt, and that was his first taste of NHL hockey. Robertson was able to record a goal in 4 appearances he had in 2019-2020 season.