Read title carefully before this and dylan Harper is plus 14 mil in salary so this does work

Celtcis: get the number 2 pick in dylan Harper who they can progress and make into the next star next to tatum while getting 4 first and good rotation in vassel and expiring in barnes while also getting of sam hausers contract

Spurs: get their 3nd star in jb making a big 3 aside from giving up 4 pretty mid 1rps and dylan Harper this trade is great for them and making them into contenders