The contract is great right now!!! In the future it's going to be pretty bad. Either the Kings get hit with a recapture penalty or they have Quick playing out the last few years of the contract at 6M. Remember when Brown's contract was a discount? Now, not so much?
Also from an expansion teams point of view, they may not want to spend $7M (21 totall) on a goalie for the first 3 years when they are sorting out their teams. They'll probably go with guys that don't cost as much, and will be with the team more then a handful of years before retiring. Quick will be getting up there in a couple of years. I don't see an expansion team taking him.
Edit: Then you have Sutter adjusting the Kings style. Is Sutter going to be successful at changing his game plan? How's the team going to adapt? Do they have the personnel? Why does any of this matter with regards to Quick? What's Quick save % going to look like with the team going through a transition and young guys getting lots of ice time? I'm expecting a dip in his goalie stats next year.