I wouldn't let Sully go just to get Skal.
You're missing Zeller completely. are you planning on letting him go or keeping him?
right now, we have 14 players on the roster. Turner's up at the end of the year with Jonas and Amir on non-guaranteed deals. that's potentially 4 openings with currently 8 draft pic, ks to be made (3 guaranteed deals) and high hopes of getting 1 or 2 really good FA's.
Preferably, if we're picking Number 5 (someone jumps us in the lottery) I'd rather trade it with some of the young players that aren't ready like Young, Rozier and Hunter for a solid player. Keep Sully and one of Amir/Zeller if we can sign Horford. I wouldn't mind flipping #5 and Rozier/Young for Noel if possible. make it Rozier and Young for that matter. Really souring on this draft.
Noel, Horford, KO, Sully, Amir/Zeller, Mickey is a pretty solid frontcourt. if we get Skal with a later pick, the kid doesn't need to contribute for a couple of years and has time to develop into a solid player (fingers crossed)