I don't see Dubas in black and white as it pertains to trades. He's won some and lost some, just like every other GM.
I've liked some of what he's done (prudent pick-ups such as Timmins) and hated some of what he's done (Kadri trade, exposing McCann at ED, Malgin/Marchment, Foligno).
I will say that if Knies is traded, I will legitimately lose my shit, particularly if it's for a UFA.
Over-hype be damned, we absolutely have no one like this kid projects, and we haven't for a very long time. He is absolutely a non-starter in a trade. You look at everything our team screams out for (not physical enough, power forward, top 6 LW), this kid has the potential to fill. He may already be more suited for NHL action than any of our top Prospects, including Robertson.
He has to be someone we bring in the fold as soon as his collegiate year is over, and if he needs time on the Marlies next year (which is fully expected and understandable) so be it, but this is a kid that we have to have in our pipeline. If he reaches his potential, on a desperately needed low cost ELC, you cannot piss this kid away.
Move Robertson before you move Knies. Dubas needs to walk away from requests for him.