Please don't mind me, someone from Puljujarvi's camp, stepping in. I really believe acquiring him could be great for Kakko. Puljujarvi just had a very strong cup in the national team. This was the first time when he was the leading player in the national team, including a game against a strong Russian team in an NHL sized rink in front of 70 000 viewers. He scored 1+3 which made him the best scorer of the tournament. I'm writing this because I know the Rangers have been interested about him.
I believe Kakko and Puljujarvi could support each other off the ice, too, and one day they could very possibly form one of the best lines in the NHL. Kakko is such a terrific prospect I'm sure he'll become a star player sooner or later so patience is the key here.