Callaway was recently activated from suspension.
Callaway, 23, is a former fourth-round pick of the Browns back in 2018. He agreed to a four-year, $3,177,856 contract that included a $717,856 signing bonus.
The Browns waived Callaway during the season and he had a brief stint with the Tampa Bay Vipers in the XFL. The Dolphins signed him to their practice squad at the start of the regular season.
In 2019, Callaway appeared in four games and caught eight passes for 89 yards receiving and no touchdowns.