What is the status of Vancouver's defensive prospect pool? I think Kapanen and Joseph (POJ to Penguins fans) for Boeser may make some sense for both sides if Vancouver would need a defenseman with POJ's skillset. POJ is pretty similar in play style to Marino (strong skating and good puck moving DFD), he's just a LD instead of a RD. Penguins fans have heard murmurs that the team isn't too enamored by POJ, mostly because he brings a skillset that is ultra redundant with who else the Penguins have on defense.
The Penguins have Dumoulin, Matheson and Pettersson as big money defensemen on LD, plus Friedman has looked fantastic in every game he has played for the Penguins so far. There just isn't really a position for POJ unless they trade one of their more expensive defensemen. I would totally do that, specifically with Pettersson, but it may make more sense to trade POJ for actual value over dumping Pettersson for a comparable contract.