FILE - In this Sept. 16, 2012 file photo, Carolina Panthers left tackle Jordan Gross (69) keeps New Orleans Saints' Will Smith (91) blocked as Panthers quarterback Cam Newton (1) looks for a receiver during the first half of an NFL game in Charlotte, N.C. The Panthers will have to find someone new to protect Newton's blindside following the retirement of  Gross. (AP Photo/Bob Leverone, File)

FILE - In this Sept. 16, 2012 file photo, Carolina Panthers left tackle Jordan Gross (69) keeps New Orleans Saints' Will Smith (91) blocked as Panthers quarterback Cam Newton (1) looks for a receiver during the first half of an NFL game in Charlotte, N.C. The Panthers will have to find someone new to protect Newton's blindside following the retirement of Gross. (AP Photo/Bob Leverone, File)