I hate using walterfootball as a source, but I think this is interesting:

Bortles could be the first quarterback selected in the 2014 NFL Draft. Sources from around the league acknowledge that Bortles requires some development, but he has the most upside of any quarterback in the 2014 NFL Draft. Bortles stands a good chance of being a top-10 pick. 

We wrote in mid-February, "Two of the quarterback-needy teams picking in the top five have told WalterFootball.com that they have Bortles as their No. 1-rated quarterback. If the Houston Texans take a quarterback with the No. 1-overall pick, WalterFootball.com believes it will be Bortles based on conversations with league contacts." Nothing has changed that stance. 

That contention has become the mainstream opinion as Bortles had a quality pro day to help his draft stock. He is the top quarterback prospect and the only one who could go with the first-overall pick. 

---