The Leafs found themselves quite the gem in forward Matthew Knies, who has surpassed all of his draft-day expectations. The young Leaf made his NHL debut this past season and will look to secure a larger role on the team come October.
While Leafs fans wouldn't be quick to move Knies, this chance to add a star like Pettersson to this roster would be hard to pass up. The young Swede has already proven he can score high point totals at the NHL level, and can more than hold his own in the corner.
While it's possible for the Leafs to move one of John Tavares, Auston Matthews, William Nylander, or Mitch Marner, we doubt they would go through all of this trouble just to replace one star with another.