Barkley was waived by the Falcons on Tuesday, Tori McElhaney of the team's official website reports.
The quarterback was added last week when Feleipe Franks was placed on the reserve/COVID-19 list, but now has been let go because Franks has returned. Barkley appeared in five games with the Bills last season but likely will not enter a game during the 2021 season as he has yet to do so already and there's one game remaining.