TAMPA, Fla. -- The Tampa Bay Buccaneers are in limbo at linebacker with the possible upcoming suspension of Kwon Alexander, and Bruce Carter leaving Sunday's loss at Indianapolis to be evaluated for a concussion.

Because of the uncertainty, the Bucs signed linebacker Adarius Glanton from Carolina's practice squad on Monday.

Glanton, 6-foot-1 and 230 pounds, played in 10 games with the Panthers in 2014 and had nine tackles, one tackle for a loss, one forced fumble and three special teams tackles. He has spent the entire 2015 season on the team's practice squad.

Alexander, the Bucs' starting middle linebacker, is appealing his four-game suspension for violating the NFL's policy on performance-enhancing drugs. A ruling could could come down at any time. Carter is Alexander's backup, but it isn't yet known how severe his injury is.

Glanton, a college free agent out of Florida Atlantic in 2014, is from Bartow, Florida.

With the signing, the Bucs waived safety Kimario McFadden.