Fales previously worked with Dolphins HC Adam Gase while they were together in Chicago a few years ago.
Fales, 26, was taken in the sixth-round of the Bears back in 2014. He was unable to make the 53-man roster coming out of the preseason during his rookie year.
Fales was been on and off of the Ravens’ practice squad throughout the 2016 season before the Bears signed him to their active roster back in November.
In 2016, Fales appeared in one game and completed two of five pass attempts for 22 yards and no touchdowns or interceptions.