Stewart. I'm gonna make a distinction here that he's the most underrated but not the most underpaid. Anyone who can dominate a SOLID Tennessee line and stop Derrick Henry single handedly at the goal line deserves to be known. Buckner taking the double teams has allowed Grover to take his game to the next level.
Probably trying to meet a few criteria's with this move. I'd guess there's long term designs but he's gotta show it's still there.
It'd make more sense to me if it was a 2 year deal and marginally easier on the cap, but if he plays well and re-up's next year, we'll live with it. Legit talent isn't easy to get.