Okay some sanity.
A Khris Middleton max contract, which you would need to pull him from the teat of Giannis, starts at $32 million a year.
If Kemba Walker makes any of the All-NBA teams(possibility for a 3rd team isn't out of the question), he is supermax eligible from Charlotte for 5 years $221 million. Charlotte would be stupid to pay him that but Charlotte is run by Michael Jordan, the guy that gave Nic Batum $120 million. So if he makes one of those teams, good luck luring him away from that contract.
But if he doesn't become eligible for a supermax, he also will need to be given a max deal starting at $32 million a year as well.
And just so everyone understands, to get $32 million under the cap you basically have to have Kyrie and Horford opt out and walk, renounce the rights to Morris, Rozier, Theis and Wanamaker and have to trade away in a salary dump either Brown, Tatum or Hayward.
All that to get to sign Kemba or Middleton, neither of which are, or will ever be, top 20 players in this league.