It's no secret that the Giants have a void at linebacker, and they're working on filling it in free agency.

Yesterday, former Vikings middle linebacker Jasper Brinkley visited, but left without a deal. A couple other linebackers may be on the team's list to help bolster the Giants' run defense.

The Giants have "at least some interest" in four-year Bengals starter Rey Maualuga, according to ESPN. They've also expressed interest in Justin Durant, who started the past two seasons for the Lions, according to a person with knowledge of the communication between the sides.

Maualuga has experience as a middle and strong-side linebacker, but it's possible the free agent returns to Cincinnati. Maualuga already visited Arizona, where Brinkley was headed after his Giants visit, according to USA TODAY Sports. Durant, 27, started at strong-side linebacker last season and is known as a good run-stopper, a quality that tops the Giants' list.

The Giants need to re-stock their linebacker corps. Michael Boley was cut in a salary-cap clearing spree, and Chase Blackburn and Keith Rivers are free agents.