Agreed to terms with linebacker Nate Irving.

Waived running back Trent Richardson.

Signed wide receiver Andre Johnson.

Agreed to terms with running back Frank Gore, linebacker Trent Cole and defensive end Kendall Langford; agreed to terms with safeties Mike Adams and Colt Anderson and guard Joe Reitz on contract extensions.

Agreed to terms with offensive lineman Todd Herremans.

Agreed to terms with quarterback Matt Hasselbeck on a one-year contract extension.

Released defensive tackle Ricky Jean Francois.

Released linebacker Shaun Phillips.

Released safety LaRon Landry; waived offensive tackle Xavier Nixon and linebacker Andrew Jackson.

Named Rob Chudzinski associate head coach.

Placed linebacker Josh McNary on exempt/commissioner permission list; promoted wide receiver Griff Whalen from the practice squad to the active roster; signed defensive end Gannon Conway to the practice squad.