None of them. Falling to the Hawks, Mavs, Warriors or Thunder would be the best scenario for him. He'll make a little less upfront, but he'll be properly developed and will make the money up, in spades, on the back end.
Unfortunately, he's going to get stuck in one of those three dumpster fires, but maybe his lack of being ready to play now will allow him to drop into a winning situation. Joining Flagg would be the most ideal spot, being with Kerr would be the second best and being anywhere remotely close to OKC would be fantastic. First class organizations with first class winners.