Quoting: OldNYIfan
Right now, Puljujarvi's value is at a nadir. That's generally not a good time to deal a young player.
This is not his nadir. His value was at a nadir last spring after his hip surgery, he was coming off a poor season (due to having pain while skating) and nobody knew just how effective the surgery would be.
Since returning to Finland, Jesse has put together impressive stats:
4, 2-2-4 +4 in Champions Hockey League
18, 11-9-20 +17 in Liiga (roughly equivalent to the AHL)
Those stats are good for 5th in the league for points (3 behind the leader), 3rd in goals (3 behind) and 3rd in +/- (3 behind). And now he's been invited to represent Team Finland in the European Hockey Tour / Karjala Tournament which starts this week.
His value is clearly on the rise again. Holland was right to not trade him over the summer as many were calling for.