The issue with Edler is two-fold: he's probably not getting moved (at least not this season), and, if he does get moved, it's going to be for a heavy return. He's struggled this season**, sure, but so has pretty much every other Canuck. At the end of the day, Edler's an established top-four defenseman, a high-end talent, a huge part of the Cancks' blue line and team as a whole.
We should probably be focusing more on potential bargains. That's sort of my thinking with Visnovsky. I've heard he might be available and at a not-unreasonable price, because everyone not named Tavares or Okposo might be available at a not-unreasonable price. I'd like "Lubo" because he can move the puck and QB the PP.
**(I suppose you could count this as a third issue.)