Any word on where Poku is thought to be going right now?
To a team that realizes he's not physically ready for the NBA and likely won't be for at least two seasons. A team drafting in the lottery is probably looking for someone to contribute sooner than that. The Celtics could draft him and stash him overseas, but if their Memphis pick moves up to #14 (assuming Memphis misses the playoffs), there are going to be other players on the board to tempt them, including Achiuwa and maybe Williams.
Look for Poku to get picked in the 16-25 range. Dallas could take him at #18 if Williams and Saddiq are already off the board. (Portland could grab Williams or Saddiq at #14 or #15.) Brooklyn could be interested with Philly's pick at #19. However, the Nets have a 2-year window with KD and Kyrie under contract, and it looks like they're going to try to make a consolidation trade. It might depend on what that trade looks like.
Milwaukee could take him with Indiana's pick at #20, although I also see them wanting a player who can contribute right away to help contend and convince Giannis to re-sign in the near-term. They also rely on George Hill and Wes Matthews and they'll be 35 and 34, respectively, next season. I could see them draft a more mature guard, like Bane or Riller.
If the Jazz let the Rockets and Thunder pass them in the standings (which looks likely), the Jazz could get the #21 pick and potentially take Poku or Paul Reed there, imo. Otherwise, Denver has the Rockets' pick and Poku would be on-brand for them (pending who their new GM is).
I have a hard time seeing him get past Boston at #26. Boston has three 1st-round picks right now, and could easily draft him to let him develop overseas.
If the Jazz's pick ends up at #21, it might not take too much to move up to #17 or #19 to grab Poku, if that's the direction the Jazz want to go. No. 17 gets the Jazz ahead of Dallas, and 19 gets them ahead of Milwaukee.