Here is a good scenario for us:
We trade Melo to Boston for all their expiring contracts (Amir, Jerebko, olynyk, young) plus their 2018 lowest first round pick, 2019 lowest first round pick and their 2017 second rounder from Minny
We then send Noah to the Spurs for Gasol, plus maybe one of the picks from Boston
This way we get first rounders for Melo plus erase the Noah mistake, plus get boatloads of cap space this offseason. Gasol becomes a great mentor to KP for one year.
The celtics get melo to compete for the chip right away while keeping the high first rounders from the nets
The Spurs get an defensive stalwart at center (i know, i know ☺) to strengthen themselves this year in place of the injured gasol plus a sweetener in form of a pick.