I don't think this packaged deal is even possible with the Kings team. Sacramento's roster has the same issue as the Celtics. Too many players at one position.
Namely the guard spot for both rosters. Vasquez, Thomas, Jimmer, Thornton, McLemore, & McCallum. They can't keep all of them. I'm sure Thornton would be the ideal guard to move but his contract is tough.
Looking at their 3 spot, an upgrade over John Salmons is vastly needed. Jeff Green or Gerald Wallace are both better options for them.
A better option at striking a deal with them would be taking on a guard and maybe say Jason Thompson, for Green or Wallace. Could you land a top pick in the future from them ? Maybe. Pretty tough though.
I.E.
Jeff Green for Thompson + Fredette (Jimmer might be the odd man out in the minute distribution with that team so he's probably moved at some point) + maybe the right to switch 1st round picks with them in 2015 ?
This might be more realistic but would also overload our own roster once again. I like Thompson helping out on the boards better than say Bass, but his contract is a concern. Fredette keeps improving year after year and is still young, & can still shoot the rock with the best of them.
I think other moves have to be made though for this type of deal to even work. Unloading Bass, Lee, etc. to other teams for some sort of compensation.