This guy is a run-and-shoot/shotgun-only QB... get him in a pro-style offense and he'll get killed. He lost his only game this year against real competition (I don't consider Boise State real). I heard (Sirius NFL radio) that many GMs (there are teams that have authentic GMs) don't think he's worthy of a roster spot.
FOX Sports on MSN - NFL - Brennan has to overcome poor reviews at combine
Why would you draft a QB who's ceiling is backup?