The Carolina Panthers will have back the entire starting front seven of the defense that ranked second in the NFL in 2013.
The last missing link was 33-year-old defensive tackle Colin Cole, who according to an ESPN.com source, has agreed to a one-year deal.
Cole started 13 games last season beside rookie tackle Star Lotulelei. They were part of a rotation with Dwan Edwards and Kawann Short that was key to Carolina ranking second in the league against the run.
The secondary remains a work in progress with free-agent signee Roman Harper expected to start at strong safety, but no other position is guaranteed.
The free safety spot could go to Charles Godfrey, who is coming off an Achilles injury, second-year player Robert Lester or a free agent yet to be signed. The Panthers had Atlanta free agent Thomas DeCoud in for a visit on Monday.