A slew of big signings and trades were reported throughout the day Monday after the NFL’s legal tampering period opened. The Bills, however, weren’t reported to have make any moves until about 10 p.m., when NFL insider Adam Caplan tweeted that the team had come to terms with linebacker A.J. Klein on a three-year deal.
Klein, 28, came into the NFL as a fifth-round pick out of Iowa State by the Carolina Panthers in 2013 when current Bills head coach Sean McDermott was the Panthers’ defensive coordinator. Through four years in Carolina, Klein was used in different roles on defense, playing both inside and outside linebacker, including filling in for All-Pro Luke Kuechly when he was out. He was also a core special teams player for the Panthers.
HC Sean McDermott coached him when he was DC with the #Panthers.
— Adam Caplan (@caplannfl) March 17, 2020