Landry was suspended without pay for four games during the 2014 regular season for violating the NFL policy on performance enhancing substances.
The Colts released Landry back in February in a move that cleared $2.25 million in cap space for the team.
Landry, 30, Landry appeared in 11 games for the Colts and recorded 47 tackles and 2.5 sacks. Pro Football Focus had him rated as the No. 39 safety of out 87 qualifying players.