Unless Marcus Smart drops to Sacramento at 8, the Suns will trade up. The Kings need a point guard and the Suns need a power forward. The top point guard will be Payton from Louisiana- Lafeyette. 8 is to high to pick him, he should go 14-17. So, the Kings pick Aaron Gordon or whoever's left for the Suns at 8. The Suns pick Payton at 14 and throw in the 18th pick. Everybody's happy.
The other thing that could happen the Kings don't think Payton makes it to 14. They pick him at 8. Charlotte pick Gordon or Randle, or whatever PF is there. They trade with Phoenix. The Suns pick either McDermott or Staukus and trade them to Charlotte along with 18th pick. Charlotte needs outside shooting and those guys can shoot.
The worst case situation for the Suns is Smart dropping and they can't make a trade. The Suns are loaded at guard and the best prospects at 14 are guards. McDonaugh is frustrated he can't get the top guys in for workouts, because he knows he's trading up. If, the Suns pick at 14 and can't make a trade. It will be a bad night.