The Spurs would be trading for Mark without an extension in place due to the extend-and-trade restrictions. After that, they can do whatever. I'd consider a likely Spurs package to be Jones, Sochan and maybe Branham along with CHI25, ATL25, ATL 27 and MIN31. Then the Spurs waive Graham, give the cap space to Mark, use Bird rights for Mamu and the room exception in Osman.
Paul, Wesley, Nunez
Vassell, Champagnie
Castle, Johnson, Cissoko
Markkanen, Osman, Mamukelashvili
Wembanyama, Collins, Bassey
With one last roster spot open if Branham is included.