If I really want to cry about Perkins, heck, I'll package up the C's future pick combined with the Clipper 1st rounder and grab someone far better than King Perk.
If something "far better" was available for the Clippers pick and a future #1, why didn't OKC make that deal, rather than giving up Green (as I recall, a far better player than Perk in his own right?)
Because all they had was Ibaka. They didn't have KG, BBD, Shaq, J.O. They desperately needed another big who could start. Thats why their paying him 9M per. The C's don't have to do that. They can add a vet like Shaq to the lineup and not miss a beat.
You can make trades like the one Danny did when you have a core 4 the likes of Rondo, Allen, Pierce, and KG.
And yes, Green is the best player in the deal. No question. But again, knowing Ainge, he'll package his pick and the Clipper pick and that will probably be the best player out of the bunch, including Green. Helluva move by DA