Carrying locally produced (read: hire CBS Sports to do the game, but brand it as "Titans Football" instead) games has nothing to do with carrying the NFL Network feed of a game over your local airwaves.
That's a separate contract, bid on separately from the contracts for producing and carrying preseason games.
For instance, there are markets where one channel has the deal to re-broadcast ESPN Sunday Night Football when their home market team is on, but one of their competitors has the deal to carry NFL Network games featuring that same team.
Trust me...I'm a doctor (er, professional TV guy.)
At the very very least, he could find a niche on special teams or as a 3rd Down back, although really he's a stronger version of Kevin Faulk, so as a HB he'd probably be good for 15-20 touches a game depending on his recieving abiltty in the NFL.