if you're seeing a QB hit free agency, chances are they're not going to be an upgrade over Jay Cutler. that goes for a lot of players that are free agents really, they're just not good enough to be starter material. some of the time they're just cap casualties though. the Denver Broncos got lucky when they signed Peyton Manning, as did the Minnesota Vikings when they got Brett Favre. those are probably the only instances where it actually worked, and I use worked loosely considering there was only 1 great year of Brett and probably 2 for Manning before his physical limitations got greater exposure.
that being said, you're not going to find many NFL-capable QBs out of the box coming from college anymore I don't think. the college game is predicated on very minimalistic offense, the only way you'll draft a quarterback and gain success from them is probably by sitting them. guys like Luck and I think Dalton that got thrown into the fire are notable exceptions. you won't see Johnny Manziel perform on their level, I don't give a shit how you look at it. he's a gimmick dork just like Tim Tebow was; those guys aren't going to be longterm solutions, as is evident by Tebow not even being able to land a backup spot despite "omg he just wins!" for like 7 games.
I'm fairly certain the offense-centric current Bears regime recognizes the sit strategy; I don't think they're gonna reach in round 1, but I don't think they're gonna get a Dan LeFevour or Nathan Enderle at the tail end of the draft (see: total scrubs and worthless picks).
best case scenario is Cutler continues to play efficient and they get a new guy to sit. I don't know if that plan will go into effect in the next draft or the one after, but I'm sure they recognize this. it's better than dumping a bunch of money in some FA castoffs like Todd Collins or Jason Campbell that can't play anymore; that's one area where Jimmy Clausen might actually be ok!