I'm pretty convinced that the Bills are down to two players (if they stay at pick 11). One is Michael Oher the OT from Ole Miss. The other is DE Everette Brown from FSU. The thing about the two is rankings wise they both should be more back end or mid first round picks. Here is a list of other players the Bills are considering and why they will not take them.
Brian Orakpo- Will be taken in the top 5 I believe.
Aaron Maybin- Too much of a project Bills are in a win now mode.
Andre Smith- Will be drafted by Cincy with the 6th pick.
Robert Ayers- Not a true pass rusher wouldn't be a huge upgrade over Kelsay initially.
Brandon Pettigrew- With TO on the roster it diminishes our need to take the top TE.
Brian Cushing- A def need at LB but could get a solid starter with one of our next 2 picks
Clay Matthews- same as Cushing.
Although you can never tell with the Bills, I honestly believe they are leaning towards Everette Brown (I had the Bills leaning towards Cromartie last year over McKelvin). Brown has less chance of being a bust pick and the Bills feel they could probably get a solid OT at pick 28. Or the Bills could go ahead and draft a player out of the blue a la Donte Whitner.