You have to keep both picks.
If you want to sacrifice the 2nd rounder and a million dollars and move the 21st pick for say the 15th-18th because you see a guy falling that you desire and never thought he would be there, then do it.
Next year this team is going to have a lot of the same players as this year many because they worked so well as a team, because a couple of the young players developed into quality role players and because the free agent market is just not very good.
So I expect KG, Pierce, Rondo, Bradley, Johnson, Stiemsma, Moore, Pietrus, Pavlovic, Allen, Green, Bass, and maybe Wilcox back. That leaves spots for two players. Two first round players.
So expect a center whether its Myers Leonard, Fab Melo, Tyler Zeller or Festus Ezeli I can't say for sure but one will be a Celtic and expect a PF/SF. Maybe a John Henson or Draymond Green or Terrence Jones.