The same DC who supervised a beat up defense that failed at historic levels is the same DC who, with a defense that still had the likes of Derrick Brown, Shaq Thompson, and Josey Jewell, gave up 47 points and nearly 200 yards rushing to a Saints team that finished with a 5-12 record and ranked 20th in the league in total offense.
Keeping him is risky. Canales and Morgan are going to look really bad if the team is really close to taking a significant step forward next season, but they can't because Evero and his defense are holding the team back.
Just hard to imagine that a guy can captain one one of the worst (and arguably the worst) defenses in NFL history and and be brought back for a third season.