NFL free agents the Bengals could sign with Rey Maualuga injury

The Bengals could be on the verge of losing linebacker Rey Maualuga for the rest of the year after he suffered a significant hamstring injury vs. the Panthers. If he's place on I.R. this week, the team could look to fill his spot on the roster with a street free agent.

Here's a look at the notable free agent outside linebackers:

Stephen Nicholas

Pat Angerer

Omar Gaither

Austin Spitler

Michael Boley

Rocky McIntosh

Erin Henderson

Marvin Mitchell

Will Herring

Kendrick Adams

Rob Jackson

And the middle linebackers:

Stewart Bradley

Ernie Sims

Keenan Clayton

Dan Connor

James Davidson

Paris Lenon

Jamar Chaney

Rob Francois

Desmond Bishop

Kevin Burnett

Jonathan Vilma

Will Witherspoon

Nick Barnett

Michael Boley was signed by the Bengals in the middle of last year, and played significant snaps in several games. For the sake of familiarity and knowing the Bengals' system, he could be considered.

James Davidson was signed as an undrafted free agent defensive end out of UTEP this offseason. He too is familiar with what the Bengals do, but he doesn't fit what they need right now.

There's always Anthony Schlegel, who looks like he's still in game shape and ready to hit someone.

Offensive guard could be another position the Bengals look to with Kevin Zeitler's injury, though he's expected to return soon.

As of now, T.J. Johnson is the only true backup guard, though Tanner Hawkinson and Marshall Newhouse did play some guard during the preseason. Here's a look at the best free agent guards:

Leroy Harris

Nate Livings

Antoine Caldwell

Otis Hudson

Mike Gibson

Richie Incognito

Danny Watkins

John Sullen

Harvey Dahl

Rob Turner

Nate Livings played and started for the Bengals in 2011 before leaving and flaming out after a stint with the Dallas Cowboys.

Otis Hudson was drafted in the fifth round of the 2010 draft by Cincinnati, but has never been able to last with any NFL team.

The Bengals are also thin at tight end. Tyler Eifert is still out for another couple of weeks. Jermaine Gresham hasn't been used in the offense much, but he is a viable weapon who defenses respect. If he goes down, Kevin Brock becomes the No.1 Tight End. H-back Ryan Hewitt can play some tight end though as well.

Joel Dreessen

Jeff King

Leonard Pope

Dustin Keller

Kory Sperry

Ben Hartsock

Kellen Winslow

Blake Annen

Anyone catch your eye?