The other consideration is Favors is a tweener, He even likes to call himself a PF, yet he doesn't have the shooting ability to play outside. Vonleh does.
That would be an interesting scenario if you could draft Vonleh and get Embiid in a trade for Favors. Huge risk, but a potential HUGE upgrade at two positions...IF Embiid recovers. Get it wrong, and it's a potential career-killing move for Lindsey.
I don't see the career killing risk at all. You're creating a chance to take a franchise cornerstone, while not inhibiting your ability to draft your "raw potential guy", and also saving the Millers $10,000,000 (next season alone), which comes with a several year option to replace that #5 pick by taking on expirings or facilitating trades, or hitting free agency, and somewhat accelerating the development of Gobert, Favors, and whatever big is drafted with this new pick.
I'm a Favors fan but if I'm Greggy Boy I take that deal in a heartbeat and tell Lindsay to try to talk Melo into going to Sactown and facilitating in exchange for this year's #7.