It would be absolutely moronic to trade Puljujarvi right now. His trade stock is at an all time low, but he's 20 years old with an enormous amount of potential. He currently playing on a line with Lucic and Strome, who has zero points in 12 games so far, but Jesse still had moments and glimpses of his speed and creative abilities. If they want to trade Jesse, they should stick him on a line with McDavid for 30 games and then it would fetch a heck of alot more than Petan and Comrie.
Plus Winnipeg would drool at the prospect of reuniting Laine with Puljujarvi, Edmonton would have the leverage in this deal. But they would absolutely regret it in the years to come. Late bloomers happen to so many great players. Joe Thornton, Pavel Datsyuk, Martin St.Louis, Blake Wheeler, etc.
People want to compare him to Yakupov, but they are both very different characters. Nail was a little brat that never listened to the coaches. Jesse is an open book and willing to learn and become molded, it's just going to take more time to develop the kid