Puljujarvi is doing good in the liiga, he's still a project. Byron's cap hit is pretty steep, so taking salary back would be necessary. It's a wild gamble that could pay off for the habs, we have 2x 2nd. Puljujarvi might still bust but in my opionion he could still turn out to be a decent 3rd line complimentary goal scorer. I'd prefer his size and RH over Byron who is kinda Redundant with Lehkonen, Cousins in the line up.
Maybe having Lehkonen, Armia, Kotkaniemi could help the kid learn english and save his career in NA