"Expect a free agent frenzy this spring in the NFL that could lead to an unprecedented buyer's market for the Lions front office.

Charley Casserly, a former Redskins and Texans general manager, estimated last month that "more than 25 percent" of the NFL will be unrestricted free agents this spring — expected to be the most in league history.

"What's that mean?" Casserly said last month on CBS' "The NFL Today." "Carnage for the players: less money for free-agent players than last year. Not a good sign if you're a free agent this year.""