The 6-foot-3 wide receiver spent the first four seasons of his career in Green Bay after going undrafted out of Illinois. He had 89 catches for 1,045 yards and six touchdowns with the Packers.
He then signed with the Detroit Lions in 2020 but opted out of that season due to uncertainties surrounding COVID-19. He returned to the Lions in 2021 but appeared in only three games and didn't record a catch.
The Falcons brought Allison in for an extended look over the weekend -- on Saturday he was spotted getting post-practice work in as well -- before he officially joined Atlanta on Monday. He joins a fairly open receiver room led by the Falcons' first-round pick this year, Drake London, and veterans Bryan Edwards (acquired by trade Friday from Las Vegas), Auden Tate and Olamide Zaccheaus.
Atlanta also signed tight end Tucker Fisk, who played both tight end and defensive end at Stanford, and Tre Webb, a defensive back from Montana State who also played at San Jose State.