To trade Dudley for a pick that's about the same pick as Dudley was drafted means that your saying Dudley only lived up to his draft selection. IMO Dudley, out played his draft selection...by A LOT.
JD is the classic "3 & D" guy with great hustle, good rebounder and a funny, good coachable player to have in the locker room.
He's worth at least a top 15 pick imo.
The issue is Dudley would appeal most to good teams that need depth. If you have a top 10 pick and you're in a full rebuild, Dudley may not appeal to your team.
So that limits who you could potentially flip him to. IE Indiana, Boston, Atlanta, Brooklyn, New York, etc would all be good fits for him potentially but they're picking 16 and later.
Maybe OKC would be a fit, but I feel like they've been so good at drafting they may want to take their chances in the draft.