Out of curiosity, what can go badly? They offer a counter and then fire you a couple months later, after they've found a more "loyal" (or just cheaper) replacement?
> Sounds like you work for a very decent company.
The manager was a very decent and reasonable human being. He's since left and I wouldn't try it with his replacement - the new guy is detached and doesn't really give a shit about what's going on, he certainly wouldn't bother with trying to retain me with counteroffers.