Davis (6-foot-1, 230 pounds) played at Sacramento State last season and went undrafted. He was the 53rd-rated inside linebacker in ESPN's draft ratings and has a 40-yard-dash time of 4.8 seconds.
At Sac State, Davis had 351 tackles, 9.5 sacks, 30 tackles for loss, four forced fumbles, one fumble recovery, three interceptions and one blocked kick in four seasons. As a senior, the native of Palmdale, California, had a team-high 131 tackles, five sacks, 10 tackles for loss, two forced fumbles and two interceptions in 12 games at middle linebacker.
A.J. Davis joined the Saints as an undrafted free agent in 2012. In two seasons, he appeared in one game on special teams. He suffered an ankle injury during the 2012 preseason and was on injured reserve last season with an undisclosed injury.