I'd offer them Amir + 2019 Memphis pick + their pick of TWO of 2017 nets pick (swap), 2018 nets pick, jaylen brown, marcus smart.
I don't think any team will willingly offer more than that (if they did, they'd be Sacramento all over again) and if Sac declines, then we say OK, we'll just pick him up for free in free agency in 2018 then.