This seems like a better place for this..
What is the consensus on what Millsap will reasonably get as a 33yo FA? As far as I can tell, the C's can get surprisingly close to having the space for him and hayward if they (A) renounce everyone (olynyk, young, mickey, jackson, zeller), and (B) trade both AB and Crowder for future picks to some team under the cap. Including Zizic (~1.4m), Yabu (~2.3m), and Fultz's hold (~7mil), that'd put them at 57m, with 43m under the cap. Assuming Hayward gets a max (starting at ~25m this season), they've got 18m to play with. If they could somehow get Fultz signed quickly at ~6mil that frees up another 1m, getting them to 19m free. Could you structure a multi-year deal that would fit with that, and that would be tempting to Millsap?
The big problem, aside from needing to pull some cap magic, is that it leaves them pretty thin at the bottom of the rotation, in case of injuries, etc. But the top 10 is pretty solid:
Fultz/Smart
IT/Rozier
Hayward/Brown
Millsap/Yabu
Horford/Zizic
It doesn't feel particularly likely, but it also doesn't feel quite as impossible as I had assumed.