Chia and co. would be stupid to trade away Puljujarvi now. He's 20 yrs old and hasn't come close to realizing his potential yet, it's only a matter of time before he becomes a permanent winger of McDavid and blossom into what the Oilers expect him to be.
If they trade him now, teams would be offering packages based on potential rather than results, which always yields much less.
Trade Now:
-Joel Eriksson Ek, 2019 1st round pick (top 10 protected)
Trade next year after having a career year aligned with McDavid:
-Matt Dumba