To be honest I am going into the draft with the general feeling that I will be happy with whoever we grab with our first pick unless we take a PF.
That being said, Harrell, doesnt look 6'8" when you watch him. His strength, massive wingspan, and impressive athleticism allow him to play like a center. If we get a guy like Greg Monroe, I think Harrell could be a nice complement to him, if Harrell's shot can improve.
With Sully/KO and Zeller of the bench I wouldnt mind that 1-4
Still Id much rather have a guy like johnson, Winlow Oubre WCS Hezonja etc.
Id be really happy if we could maybe get a SF with pick #1 (say Winslow or Oubre if we pick 12) then if we package Clips, KO and maybe some other 2s to move back up and get Harrell if he falls to 15-17. Then sign Monroe.