Seattle Seahawks tight end Anthony McCoy underwent surgery to repair a torn Achilles tendon.
The Cincinnati Bengals have signed safety Shawn Williams, their third-round pick in April's draft.
The Houston Texans have signed linebacker Sam Montgomery, the team's third-round pick in last month's NFL Draft.
The Chicago Bears will retire the No. 89 worn by Hall of Fame tight end and former head coach Mike Ditka.
The San Francisco 49ers signed defensive tackle Tank Carradine and tight end Vance McDonald to four-year contracts on Thursday.
The Baltimore Ravens signed linebacker Arthur Brown to a four-year contract on Thursday.
The Arizona Cardinals signed defensive back Tyrann Mathieu to a four-year contract on Thursday.
Washington Redskins quarterback Robert Griffin III is still recovering from knee surgery and said Thursday his goal is to be ready for training camp in July.
The New York Giants re-signed wide receiver Ramses Barden on Thursday.
The Tampa Bay Buccaneers signed their second- round pick, cornerback Johnthan Banks to a four-year contract on Thursday.