This disappointing news for a Lions’ defense that has already lost DE Kerry Hyder to an Achilles tear.
The Lions will likely place Copeland on injured reserve and add someone to their roster in the coming days.
Copeland, 26, originally signed on with the Ravens as an undrafted free agent out of Pennsylvania back in 2013. He lasted just a few months with the team before he was waived and later caught on with the Titans during his rookie season.
After a year in Tennessee, Copeland signed a one-year contract with the Lions and returned to Detroit this past April on a one-year, $615,000 exclusive rights contract.
In 2016, Copeland appeared in all 16 games for the Lions and recorded 16 tackles, no sacks and a forced fumble.