With Edmundson out,
Matheson - Savard
Guhle - Scheuneman
Wideman - Harris
Bowey
That's only 2 rookies.
Caufield - Suzuki - Anderson
Dadonov - Dvorak - Gallagher
Monahan - Dach - Hoffman
Drouin - Evans - Pitlick
Armia
Byron on IR
That's 13 forwards. Who knows when Byron will be back, but it doesn't seem like it will be anytime soon. No need to make a trade right now.
Habs have no need for cap space at the trade deadline. We're the ones that will be selling off many assets.
They've been working on trading forwards the whole summer, and it hasn't happened yet. Camp doesn't really open up trades, injuries do. I don't think any team is in dire need of making a trade for a forward right now. If you're a GM, you would rather start the season and see what you have first.
Even if there were a few teams that really needed a forward, I doubt they would give up the assets that Hughes would want in a trade for Drouin/Dadonov/Monahan (50% retention).