Honestly most of the Canucks dumps are contributors (except Eriksson).
Sutter and Baertschi are not worth dumping because they only have 1 year left. Next year, when they come off (along with Edler), you use their cap to re-sign Pettersson and Hughes.
Beagle, Roussel, and Eriksson - who have all filled a role these playoffs are the guys who we can't afford to keep. Beagle and Roussel contribute quite a bit but we can't afford to pay them and Sutter to be a $10m 4th line.
It's a matter of comparing those contributions to their cap hit to me. Baertschi contributed least (by merit of Green and Benning demoting him), followed by Eriksson, Sutter, Benn, Beagle and Roussel (at least in my mind). Towards then end, the players listed are contributing almost to the level I'd expect. However, anyone I listed I feel is replaceable, or even someone we can improve on with players already in our organization. Ideally, due to cap hit and term, Eriksson would be the player I'd pay most to leave, but Toronto, who this thread is about, doesn't have the capspace to take Eriksson, or any of them really, and that's really the only realistic payment that I see us accepting.