Market value. It’s what all great players deserve and usually get. To me, there’s absolutely no mystery. Bland will command top of the market for a CB in 2 years unless he gets injured or his play drops off.
A few years ago Stephen Jones made one of the dumbest comments I’ve ever seen from him (and that’s saying a lot) He once said, “We don’t believe in setting the market for any player”. Right before the Cowboys overpaid for Zeke and established the RB market. They will most certainly establish the market when they sign Parsons to a big deal next year.
If your team is good enough to draft and develop a top NFL player at any position, you should absolutely be prepared to pay fair market value to keep that guy. That’s just the way it is.