Drafting #20 is high for a team like the Bulls. Even in weak drafts, a player here is expected to make the team and contribute. Whoever is selected, that player will work hard and have some dependable skill, be it defense, a post-up shot, length and etc.
The past may predict the present. The Bulls' recent draft history from Wikipedia has a stand out, James Johnson. James was a rare miss among some very good, in hindsight, picks.
James was a high risk pick. The pre-draft knock was 1) tweener with physical skills and a tantalizing upside, 2) questionable motivation and focus. He was a known risk/high payoff selection that didn't work. So was Tyrus Thomas for that matter.
James' Classmate Taj Gibson at #26 was described as an older player with less upside and a hard worker. A unexciting selection who is now a considered a late round gem. Maybe a top 10 selection in hindsight.
For the 2013 draft CNNSI suggests PF Tony Mitchell, an athletic multi-position player with questionable circumstances. I am skeptical they'll risk another "James Johnson" pick at 20 unless Mitchell is very special with special circumstances. Jimmy Butler is an example of a that special circumstances guy. Bulls did their homework and he's a great pick.
Someone will fall to 20. In a weak draft, GMs error for a pick with size. It's possible a SG/SF with a good shot and defensive length will be there. In the CNNSI mock draft, that guy could be C.J. McCollum. He's supposed to go to the Bucks at #15 to replace 6'3" Monta Ellis, however I think the Bucks want size at SG. Swapping a small SG with a less expensive 6'3" SG doesn't shakeup the Bucks back court.
UPDATE
Apparently the ESPN's Chad Ford now thinks McCollum will go at #7 to the Kings. Wow. That makes sense for this reason. Steph Curry GSW a 6'3" hybrid SG/PG also went #7. The new Sac Coach is former Assistant Malone from GSW and he would know how to use a player like McCollum who looks like a "Steph Curry" on paper.
So to updated: McColumn if available or Tim Harway Jr.
The 6-foot-6 shooting guard has earned a firm first round projection from just about every reputable NBA draft analyst in the business, and has drawn rave reviews from general managers for his work ethic, 3-point shot and approach to the game. - MLIVE.COMThen in order: Reggie Bullock for his perimeter shooting and defense or Tony Snell.
The wildcard is when some F/C drops in the draft. I doubt that will happen since confused GMs pick for height in the absence of a clear choice. I expect the bigs will be selected before 20. If Bulls grab some falling big man - the Bulls front office may be just as confused as I.

