Sherman has mentioned, a few times, he "starved" at Stanford. He brought up the standard argument of the NCAA raking in the cash while student athletes, like him, are starving. Sherman’s fight over the urine sample attacked the system, for himself and future players. He thinks and talks like a DeSmith or Upshaw (without the being Roger or Paul's fluffer part).
Hypothetically, given who Sherman is, I could see him voicing some questions if a Revis was brought in. Not in a selfish manner, but as a voice for the rookies footing the bill in the new CBA.
Would it be an issue? Most likely not. But, the reason I believe in this team is their personalities and bond. A high-paid outsider, could in theory, disrupt that.
It's the offseason, time to make up isht to discuss. And, while this scenario is unlikely, I bet it's some the front office is cognoscente of.