Agreed. I think he's been down on form this year (along with virtually everyone else in the Raiders team) but this is the first year he hasnt been an out and out superstar for us.
Its a risky deal for sure, you're extending thinking this is just a form slump... if it's not though, and he's just losing it with age, this is going to look like a very bad deal in 12 months time... though i also agree that even as he slows down and he's not got the legs to play edge anymore, he can probably churn out another good 1-2 seasons as a mobile middle third player
Risky deal none the less.