HYPOTHETICAL as stated in the title
the Spurs and Hawks would swap picks and the hawks send the spurs pick to the blazers(22 -> Spurs), (20 -> Blazers)
The blazers get off the Jerami Grant money (his value is not dreadful now after a good year and only 2yrs left)
Spurs get a top 10 pick to draft more youth around wemby, a guy like Braydon Burries would be a fantastic fit, and if available/trade up for Thomas Haugh as well in mid-first round
Blazers get a pick in the first round in a stacked class to help build around Deni, Sharpe, and young core
While Fox is an Allstar caliber guard he has a massive contract and following a playoff exit the spurs could opt to trust castle, harper, and other picks going forward, while getting Fox off the books and getting a near 20ppg scorer with 2 years left (so quite tradable contract wise) and some pick (especially pick 8)