Johnson, 26, originally signed on with the Lions as an undrafted free agent out of Georgia Tech back in 2015. He was waived coming out of the preseason before signing on to the Lions’ practice squad.
The Rams later signed him to their taxi squad at the start of the 2016 season after Detroit once again cut him loose. He was on and off of the Rams’ active roster last year before being cut loose earlier in the week.
In 2017, Johnson appeared in one game and recorded six tackles and no interceptions.