PFW Panthers correspondent Darin Gantt reports that recent free-agent signee DT Ron Edwards has suffered a torn triceps.
The Panthers have reached an agreement with free agent WR Legedu Naanee, adding depth to a position that is low on experience.
Despite making a lot of noise when free agency began, cornerback and D-tackle remain positions where the Panthers could use an upgrade.
The Cardinals have found a veteran corner, agreeing to terms with former Panthers CB Richard Marshall.
QB Cam Newton, the top overall pick of the 2011 draft, has agreed to a contract with the Panthers.
The Panthers have continued their crusade to lock up their best players, signing MLB Jon Beason to a long-term contract.
A day after it was reported the Bears were actively looking to trade TE Greg Olsen, a report states that the team traded the former first-round pick to the Panthers in exchange for a draft choice.
Sources have indicated to Pro Football Weekly that WR Steve Smith is expected to remain a Panther this season after rumors had circulated that he would be traded.
After finishing with the league's worst record in 2010, the Panthers have been the most active team in the early stages of activity.
The Panthers continue to keep their own in Carolina, agreeing to re-sign LBs Thomas Davis and James Anderson to five-year deals.
The Panthers continue to spend money in free agency, agreeing to two more deals on Wednesday afternoon.
Carolina agreed with RB DeAngelo Williams on a new five-year deal worth $21 million guaranteed Wednesday, according to reports.
A day after re-signing DE Charles Johnson, the Panthers made their defensive line even tougher by agreeing to a deal with DT Ron Edwards on Wednesday morning.
The Cardinals reached an agreement with former Panthers TE Jeff King on Tuesday.
The Panthers and DE Charles Johnson, one of the top free agents on the open market, have agreed on a deal to keep him in Carolina.