I'm a little irritated that Pryor was not tagged. Browns have no leverage at this point.
Tagging Pryor means you are setting a price at 15m and placed that as a value you are willing to spend. Once you offer an amount it very difficult negotiating smaller later. Paying Pryor top dollar gives him no incentive elevating his game.
Personally I think Sashi offers Pryor 10 or 11 with a second year option. Pryor continues elevating his play make him highest paid receiver next year with a long term contract. If Pryor gets hurt, extend the option.
Right now agent most likely is demanding top pay. Sashi thinking 8-9. I see no reason for both sides not to see what others are willing to pay. Pryor is a unique case.