Johnson agreed to join the Bengals' practice squad Monday, Adam Schefter of ESPN reports.
Cincinnati opted to keep Joe Burrow and Joe Flacco as its sole quarterbacks on the 53-man roster heading into the regular season, but Johnson -- who was with the club for training camp and the preseason -- will remain in the organization as a depth option at the position on the practice squad. The 40-year-old signal-caller has been part of 14 different NFL teams over his long career and spent all of 2025 with the Commanders, appearing in five games and completing 34 of 54 pass attempts for 372 yards and a 1:2 TD:INT to go with 55 rushing yards and a touchdown on 12 carries.