I think the best we could reasonably do is Ray+BBD+1st round pick for Iguodala and Dalembert.
Now, as much as it disrupts our chemistry, if we did something like Ray+Perk+1st round for Iggy+Dalembert+Lou Williams (or one of their other decent younger players), I'd do that in heartbeat.
Iggy+Dalembert for Ray+Perk isn't even that bad of a trade, considering Iguodala is so much better than Ray at this point, on both ends of the court (especially defensively), not to mention about 7 years younger. I'd want to get a little bit more in terms of future talent in order to do that deal, though.