Davis is a skilled (good shot, smart, quick feet, good handle), but flawed (short, overweight) backup power forward. I'm surprised we have heard so many teams linked to him. And I'm really surprised at the dollar amounts being thrown around (5-6 per year). I think its all steam and speculation.
If I am a rival GM, I'd rather get a starter at the 4: Odom, Millsap, Lee, Varajao
Or go get one of these reserves:
M Williams
A McDyess (at lease we've hear he is higher on the totem pole)
Z Pachulia
D Gooden
C Frye
C Wilcox
B Bass
H Warrick
(i'm sure there are others... but I haven't seen much of Gray, Hollins, May, etc.)
Also...
If someone gave Davis a 3 mil/year contract he'd probably continue to be hungry to elevate his status in the league. But if someone overpays him, he might rest on his laurels and get in worse shape (especially if on a mediocre team).
Having said all of this, I really think he'll be back in Boston at a starting figure of 3 mil by the end of the month.