Baltimore selected Matt Elam with the No. 32 overall pick in the first round of the 2013 NFL draft out of Florida.
The Ravens didn't pick up the option in Elam's contract for 2017, and he did not play last season.
The 26-year-old defensive back got into legal trouble in 2017 on two separate occasions.
He was arrested in February 2017 and "charged with one count of cannabis possession, one count of possession of cannabis with intent to sell or deliver and one count of possession of a controlled substance," but the charges were dropped in June.
Elam was also arrested in May 2017 and charged with grand theft and battery, however, those charges were dropped as well after the accuser refused to cooperate in the case.
The Palm Beach Gardens, Florida, native appeared in all 32 games and made 26 starts during his first two NFL seasons before missing all of 2015 with a torn bicep.
Elam then appeared in just nine games in 2016.
In 41 career games, Elam has registered 130 tackles, eight passes defended, two fumble recoveries, one forced fumble and one interception.
The Saints have no shortage of depth at safety between veteran Kurt Coleman, 2016 second-round pick Vonn Bell and 2017 second-round pick Marcus Williams, but Elam would give them a thumper capable of dropping down into the box on obvious rushing downs.