He's been around for a while, I hope he is still eligible.
Don't think so.
https://www.cincyjungle.com/2018/9/...ibility-pay-rules-changing-teams-what-to-know
Eligibility
Not all players are eligible for a practice squad, especially if they’ve been in the NFL for several years and/or played in a number of games. In 2016, the NFL adopted a modification to the practice squad rules that allows up to four players per practice squad to have two accrued seasons, making it easier for teams to have experienced players on their practice squad. In the previous agreement, only two players with two accrued seasons were allowed to be on a practice squad.
Other than those four players, eligibility is limited to players who have been on an active roster for fewer than six games, or were on a 46-man active gameday roster for fewer than nine games.
A player is allowed on the practice squad for up to two years, with one year counting as six weeks in a season. A third year on the practice squad is only allowed if the team keeps 53 players on their active roster at all times (which every team does).
https://www.turfshowtimes.com/2018/...tions-roster-depth-chart-waive-isaiah-johnson
A free agent who came beyond the
2015 NFL Draft, Johnson originally signed with the
Detroit Lions before landing in St. Louis a year later. He has since bounced between the practice squad and active roster for the last three years. He played in four games and logged a single tackle in last year’s Week 17 game against the
San Francisco 49ers that featured the Rams’ backups.