Ready, set, negotiate multi-million contracts. The NFL’s free agency period opens Monday with a 52-hour legal tampering period ahead of the official start of the new league year Wednesday. Edge rusher Trey Hendrickson, six-time Pro Bowl wide receiver Mike Evans and Super Bowl MVP Kenneth Walker III head the list of high-profile players who will be free to sign a contract with a new team. Quarterbacks Kirk Cousins and Kyler Murray also will be seeking new teams because they’re going to be released by their teams.