I think the $25M/5 year offer we made to Frye is more than fair and probably the max he should expect from anyone. So the fact that he hasn't accepted it yet and rather wait to see what other teams have left does not seem to indicate that he really cares if he stays here. I know it's a bit early to accept offers, but I thought Frye would jump all over a Phoenix deal that pays him this much.
Now, as others mentioned, if he does accept then the only way we can replace Amare is with a sign-and-trade. We won't have enough money to even make Lee an offer otherwise. At this point I think it's more likely that Frye will end up our staring PF next year.