You make it sounds like Drouin is the worst player in the league.
No doubt he's been a disappointment and he definitely got preferential treatment because 1) the Habs were banking on it becoming the local star that we haven't had in decades 2) the sheer level of skills this guy has.
I can't really blame his effort this season, he's trying. He's not Gallagher-trying, but he's working, forechecking and backchecking. He's still allergic to contact and still makes some boneheaded plays, but he's also creating chances every night. Not a lot, but some.
He still has value and if we were interested to trade him there would be interest. Absolutely certain that some teams will take a flyer on him hoping that a change of scenery will finally unlock his potential. But is he overpaid for his contribution? Hell yeah.