After that, if the C's have to use their picks, I say use the Nets pick on Buddy Hield, use the Mavs pick on Denzel Valentine, use the Celtics pick on Jeanne and stash him for a couple years. This draft would then necessitate the Celtics trading away a couple young guard prospects, like Young and Hunter. That doesn't bother me as I think Valentine and Hield are massive upgrades over both players. It would also necessitate having to use free agency to upgrade the frontcourt and add some scoring there. Basically this is the scenario I least want to unfold for Boston
As worst case scenarios go, it could be a lot worse.
Via trade Danny would still have the resources, post-draft, to go after guys like Kevin Love, Jimmy Butler, Jahlil Okafor, or Greg Monroe.
Then in free agency, you could make an offer to Harrison Barnes and see if Golden State matches. Or you could go after guys like Batum, Deng, or Marvin Williams. Or simply re-sign Sullinger if the $$ seems like it'll be easy enough to move later.
If Sullinger and Amir are still our starting frontcourt headed into next year, though, that will be a major problem.