Dach's done. Anyone can bookmark it or save it and quote me if I'm wrong, I will gladly eat it.
IMO, there's no way to come back and mentally be fine after what he's been through. He has never really established himself as the type of player he wanted to be. There's no real 'form' to return to in his case (unlike a Monahan for example). There's a form of what he could be/could have been, but it's just not realistic.
He looked timid/scared to get hurt a lot of this season before eventually getting injured again which is, in my opinion, why he also didn't play very well. I'm not blaming him for that at all, but this injury will not help that.
I'm not Nostradamus and I've been wrong plenty of times before but I just don't see a way back for him, especially with this team.