Who? Can you give a recent example of a Packer who was near free agency and accepted significantly less than he could have gotten elsewhere? I know it's mostly speculative, since we really don't know how they would have done in free agency if they had signed before, but I'm just looking for some precedent here. I seriously doubt Shields would have done better in free agency than what he got here.
Well, you also have to consider the point the guy is at in his career. I can't speak for whether or not Jennings is happy in Minnesota (he says he is), but he was, I believe, 30 when he signed. It's going to be the last major free agency deal he gets in his career, so in a situation like that it's entirely understandable if a guy is looking to hit paydirt. I know the difference between $8M and $9M doesn't seem like a big deal, but that's 12%. If I got a 12% raise today, that would be a pretty significant thing for me.
Contrast that to Cobb who is only 24, and assuming he stays healthy and productive, will probably be in line for another big contract somewhere in 4-6 years depending on how long he signs for. So yes, it's certainly possible that he may consider that his QB situation for his next contract may impact his future one and this might convince him to take a little less. But almost never for a significant discount. It only takes one play to wind up like Jermichael Finley and then it doesn't matter who was throwing you the ball.