That being said, I still don't see why Chicago took a RB with Thomas Jones (who did well when a QB better than Quinn was under center) with such other needs. Now, its really coming back to bite them.
As best as I can tell, the Bears honestly thought Benson had the chance to be a real stud RB. TJones, while a good back, is not likely to rise to that level, so the thinking was to take the guy who could be the next great Bear RB ala Sayers, Payton, Neal Anderson, etc. In hindsight it is easy to say they should have picked a WR but I was very happy with the Bears pick on draft day (not now obviously).
I tend to side with Sixxgunn on blaming Benson. I have heard conflicting reports on the offer, but looking at the Bears recent history they went out and signed Muhammed and Ogunleye with no problem - I don't think we're dealing with the Bears being a bunch of tightwads in this situation.