Let Caleb, McKown, and Enderlye (sp?), all battle for the back-up spot, but cut the other two, unless Enderlye will go practice squad.
DRAFT a QB, with a strong arm for the Windy City environment, in one of the later rounds. (5-7) This QB is the 3rd stringer on the roster.
Too much money invested in Cutler to bring in a bigger name back-up IMO, plus Caleb, McKown, or Enderlye, have to step up for the back-up. JMO.