The terms of the deal are currently unknown.
Harold spent 2018 with the Lions after they made a late-August trade to acquire him from the San Francisco 49ers for a conditional seventh-round selection in the 2020 draft.
The linebacker registered four sacks last season, including two against the New England Patriots in Detroit’s Week 3 victory. He was also credited with 10 combined tackles and five quarterback hits.
Harold played around a third of the team’s snaps in the opening month of the 2018 season, but took time away from the team after the birth of his daughter. The emergence of Romeo Okwara during that time marginalized his role, and he rarely saw regular playing time afterwards.
He was drafted in the third round of the 2015 draft out of the University of Virginia by the 49ers. Harold has registered nine sacks in his first four years in the NFL.