It still amazes me when folks use the "he may get injured card". Kracken is a versatile beast. Plays the run very well, as well as rushing the QB. You just cannot replace a player like Hardy.
And it still amazes me that people claim he is irreplaceable...come'on. Is he a top pass rusher in the NFL? Id say top 10 but IMO there are others that can step up and provide ample pressure and support if necessary. Our Dline is so incredible all the way around now so that you could replace one guy and you won't notice a massive difference in production (sans Fua). Look at the Bucs & Miami game.
Injury is always a possibility, so why not factor that in? You don't want to put all your eggs in one basket when re-signing, and if the possibility of replacing him comes up, do you want a reliable and dependable backup, or a scrub off the practice squad since you couldn't afford to sign anyone worth a poo to back him up.