In addition, the Patriots released DL
Carpenter, 29, is a veteran of six NFL seasons with Dallas (2006-09), Miami (2010) and Detroit (2010-11). He joined the Patriots as an unrestricted free agent from Detroit on April 5, 2012 and was released on Sept. 1 following training camp. The 6-2, 250-pounder was originally drafted in the first round (18th overall) of the 2006 NFL Draft by Dallas out of Ohio State. He has played in 89 NFL games with 10 starts and has accumulated 165 total tackles, one interception that he returned for a touchdown, 3.5 sacks, five passes defensed and one fumble recovery. Last season, Carpenter played in 16 games with three starts for the Lions and recorded 29 total tackles and his first career interception at Dallas on Oct. 2 and returned it 34 yards for a touchdown.
McClain, 24, is in his second NFL season. The 6-foot-2, 291-pounder joined the NFL as a third-round draft pick (65th overall) of the Carolina Panthers out of South Florida in 2011. Last season with the Panthers, McClain started in 12 games and finished the season with 19 total tackles, one sack and one fumble recovery. He was released by Carolina on Sept. 2, 2012.
Austin, 25, was signed by the Patriots to the practice squad on Sept. 1. He was originally signed by Minnesota as a rookie free agent on April 24, 2010 out of Clemson. The 6-foot-4, 310-pounder was waived by Minnesota on Sept. 4, 2010 and joined the New England practice squad on Sept. 29, 2010. He was released by the Patriots prior to the start of the regular season last year and claimed off waivers by Houston, where he played in three games. Austin was released by Houston on Aug. 26, 2012.