In every professional sports league, roster turnover is just a fact of life. The combination of salary caps alongside free agency means that, in the NFL at least, about a third of every team’s roster changes year over year. Depending on how adroit your team’s general manager is at managing…

In every professional sports league, roster turnover is just a fact of life. The combination of salary caps alongside free agency means that, in the NFL at least, about a third of every team’s roster changes year over year…