The Broncos brass may not be in love with Tim Tebow as a long-term starting quarterback right now, but Elway and Fox are at least giving him a chance to prove them wrong.
Tebow got a couple of starts last year due to an injury to Kyle Orton, but with a new coach and simply because he was starting due to an injury. Now, Orton was benched in favor of Tebow, and the coaching staff and front office are going to use the rest of this season to know if they need to take a quarterback in next year's draft or not.
If Tebow succeeds, then the Broncos have their guy. If he does not, they'll be picking high enough to get a top quarterback in the draft anyway. It may not be Andrew Luck, but Mat Barkley, Laundry Jones and Robert Griffin III are fine prospects.
Let's look at some other quarterbacks that will be auditioning for starting jobs, whether it be on their current teams or somewhere else.