Good on him. Got passed up in the draft, even after scoring 45 goals in the Q last season (30+ did come in the 1st half of the season though). Got invited to Pens development camp and worked his way into the rookie tournament, then into main camp, and now earned a pro contract. That speaks to his compete level and work ethic, musts for any Penguin.
A decent comparable to Dea (for now, at least) is Mark Letestu. Both smaller, skilled centers that went undrafted & had to earn their way. I think Dea is a little faster and has a little better shot though. Really good at popping into open ice at the right time.
No guarantees on what the future holds for any player, but I really like adding a hard-working, skilled kid like him to the system. The biggest thing for him will be to continue to get stronger. Before last season, there were reports he grew 2" to 6', 155. The Pens had him listed at 5'11", 176 after physicals for whatever that's worth.