Avdija + Kispert for Zach Collins + Branham + Wesley + #8 + #35 + Charlotte pick
Spurs get young vets that fit better at the expense of #8 + minor draft capital, takes Collins contract off the books, and makes roster space for a few contributors.
Washington gives up 2 young and productive players but takes another swing at #8, gets a look at 2 young guys with potential that fit their timeline, and gambles by some miracle Charlotte makes the playoffs they'll get a mid teens pick in a loaded draft
With #4, Spurs either take Dillingham or Sheppard outright (or maybe Risacher), or if they think they can afford to get one of them at #7, offer Portland #4 for #7 + #14 and still get one of the Kentucky guards plus have a chance to take a swing with anyone who falls (Topic, McCain, Cody Williams, Holland, Collier Devin Carter, etc).