Mtl was in a bind, fighting for a playoff berth in the 2nd half of the season and with their starting QB out. That's a pretty desperate situation. And what great asset could Hamilton extract from them in exchange for the overpaid, underperforming, oft-injured Maas? Piercy. He's still on the team, but not exactly an impact player.
And how did the Maas trade work out for Mtl? Kaput. They ate his considerable salary for virtually no performance. Of course, they only had to pay him for less than half of a season. "Fool me once..."
Printers, who makes more than Maas was making and hasn't performed any better, isn't going to attract any interest at 350k or 400k or 450k or whatever. The best Hamilton could hope for is that a team would trade a late draft pick or inconsequential player for his rights in the hope of being able to renegotiate his contract (read: huge pay cut).
Nobody is going to give up a starter for a hugely overpaid, injury-prone underperformer, no matter how much you wish for it.