Didn't see this tweet in the thread, but remember that Monroe also can veto any trade, and it seems he would do just that:
@JeffZillgitt
Teams calling Pistons about Greg Monroe get same answer: Monroe, who must approve trade, uninterested & wants to keep Bird rights, I'm told.
So he's uninterested in getting traded b/c bird rights or he'll deny trade to team he's uninterested in?
I think it's 100% about bird rights. If he retains them, he can orchestrate a S&T, and his field of potential suitors increases. He's played it smart so far, not making waves, not causing friction in the lockerroom, deferring to SVG.
The S+T is the best-case scenario, but the 2nd best is that the possibility of the Pistons being able to sign/S+T him for the Bird rights max provides leverage to help make it more likely another team offers him the non-Bird max.
In other words, if he gives up his Bird rights he not only definitely loses out on that bigger ceiling contract, but even reduces the chances of getting the lower non-Bird max.