Report: Saints to sign Panthers’ LB A.J. Klein = The Saints are working to revamp their defense, and they’re signing linebacker A.J. Klein to do it. In him, they’ll get a guy who learned from one of the best, playing behind Luke Kuechly with the rival Carolina Panthers. Klein has played when Kuechly was hurt and notched a total of 23 starts in 60 games. In his career…..