I was listening to Felger & Mazz yesterday (who I don't necessarily trust for their NBA knowledge). They were saying that if the Celtics traded the 2017 Nets pick they were actually just trading the right to swap with the Nets. So that lets say the Celts traded the pick to the Cavs, the Cavs could then swap their first rounder, not the Celtics, with the Nets (I'm assuming the Cavs have a first rounder, but use whatever team for the sake of an example). Basically, they were saying the right to swap would be much more valuable to a good team than a bad team.
Is this accurate? Wouldn't the receiving team still have to choose between the better of the Celtics pick and the Nets, not their own and the Nets?
Can the Celts trade just the right to swap and retain their own pick?