If Sabonis is traded I think Kings fans are going to be unpleasantly surprised to see how little we get in return.
Remember when we all thought that we'd be getting Castle and/or Atlanta's pick in the Fox deal and got neither?
Personally, I'd keep Sabonis, dump DDR and LaVine and look for a kid like Caleb Wilson to help shore up interior defense. But IF Domas wants out and/or the Kings really want to move him, there just aren't going be very many interested teams. He's a player you pretty much have to build your offense around and who doesn't provide defense while also having a cap hit of $40M+
Edit: If he can continue to prove he can hit open threes, Chris Cenak is another draft target in the event we keep Sabonis.