Roster turnover is inevitable—after all, the average team adds about 10 or so players to their offseason roster from the college ranks per year, if not more, through the NFL Draft and college free agency. At least five or more of them tend to make the 53-man roster. That doesn’t factor in veteran free agency and the trade market, as well as retirement.
As a result, it is not atypical to have a year-to-year roster turnover of 30 percent or more, and the gradual discarding of former draft picks will be a part of that—they could be traded as well.