Myles Garrett, the Cleveland Browns defensive end, has been reinstated by NFL commissioner Roger Goodell after serving a ban for hitting Pittsburgh Steelers quarterback Mason Rudolph with a helmet.
Garrett was suspended indefinitely for hitting Rudolph in the head during the November 14 game and he missed the final six games of the 2019 season.
The 24-year-old met with Goodell on Monday at the league office in New York - and the former number one overall draft pick is free to participate in off-season workouts with the Browns, which are scheduled to start in April.
Browns general manager Andrew Berry said: "We welcome Myles back to our organisation with open arms.
"We know he is grateful to be reinstated, eager to put the past behind him, and continue to evolve and grow as a leader.
"We look forward to having his strong positive presence back as a teammate, player and person in our community."
Garret has apologised for his actions, after hitting Rudolph during an ugly brawl that overshadowed a Thursday Night Football game between Cleveland and Pittsburgh.
The NFL subsequently upheld his indefinite suspension and he was fined $45,623 (£35,157).
Garrett had 10 sacks in the 10 games he played last season, and his performances prior to his ban were a highlight for the Browns, who endured a disappointing season overall, finishing with a 6-10 record.