Kam has had multiple surgery's on ankles, knee, a shoulder if I remember also Safeties that play in a 34 like Polumalu had a longer career because they were not the sole enforcers, Sanders in Indy was the Force and the Brians there and tried to hang on as long as he could but declined quickly due to a constant amount of dings and nagging injuries till he was not the same player. Kams a heady player and makes up for things with smarts now over athletic edge, how often did we see the big hit last year, his ankles cost him leverage or launch ability, Sherman banged up and Earl getting hurt and Lane I think suffering from PTD from his severe injury, he isn't hitting like before either.
We drafted Safety heavy for a reason, insurance and to start getting younger and healthier, were not going to offer much till later after we see how these guys do and how well Kam, Earl, and Sherm come back, Shead is a longer prospect to return and some of these guys we picked up could supplant him easily as well.
Paydays for past glory isn't going to happen, it's what have you done for me lately. Hard decisions are coming, not this season unless some of the new blood blows people away but surely next year.