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Cardinals lay low during first week of free agency

Safety Tyvon Branch is the only non-returning free agent so far for the Cardinals. AP Photo/Marcio Jose Sanchez

A breakdown of the first week of free agency for the Arizona Cardinals:

Most significant signing: It would be the only non-returning free agent, safety Tyvon Branch. He helps replace Rashad Johnson, if Johnson isn't brought back. And if Johnson does return, Branch gives the Cardinals added depth at safety and, with his speed, another ball-hawking defensive back.

Most significant loss: Of the few players Arizona has lost, the most significant was tackle Bobby Massie to the Chicago Bears. He was on the verge of returning to the Cardinals for one season and would have solidified the offensive line through 2016. Now the Cardinals have to either turn to D.J. Humphries or find a veteran to fill a shot-term need.

Player they should have signed or still could sign: Jason Pierre-Paul, whom Arizona pursued but whom ultimately re-signed with the New York Giants. Pierre-Paul would've been the splash in free agency that the Cardinals don't typically make.

What's next: Arizona still needs to add help at safety and cornerback, but a right guard might have become its top priority now with the trade of Jonathan Cooper. They Cardinals likely will wait at safety until Tony Jefferson's future is decided. He was given a low tender. If Jerraud Powers doesn't return, then Arizona will need to find depth at corner behind Justin Bethel -- or instead of Bethel as the starter. And at right guard, Arizona basically needs to find Cooper's replacement.

Overall grade: B-minus. Arizona addressed a need with Branch at safety through free agency but instead filled its biggest need -- pass-rusher -- through a trade on Tuesday that landed them Chandler Jones.