The Bulls are going to bring back Demar, Vucevic is only getting older so use your assets to get better and make a push. They can still trade Zach Lavine for a good package which already would leave them with: Coby, Ayo, Brogdon, Derozan, Jerami, Vucevic which is pretty solid.
Blazers need to trade off the older guys while they still can. They get a 3/D guy who would benefit from a change in scenery and a guard who when healthy is a very solid nba player. Plus they trade up in this years draft and get a future first