The key difference here is that Rodgers didn't have to sit behind a veteran for his entire rookie contract. That is what Jake Locker is facing if Manning signs. For Jake Locker to sign a significant second contract after his rookie deal expires in 2014, he will need to have proven himself as an NFL starter by then. He will not want to just sit around and do nothing and then hit free agency having never been given the chance to start. He would be justified in asking for a trade. That's not an ego problem, that's what anyone would do. There is a very good chance that signing Manning means the end of Locker in Tennessee. Then, if Manning doesn't bring a Super Bowl, the whole thing was a huge failure and the Titans are back to square one without a franchise QB.