The Oakland Raiders on Tuesday released safety Nate Allen, just one season after he signed a four-year, $23 million free-agent contract with the club.
Allen played just five games last season as he struggled to recovery from a right knee injury.
His $4.9 million salary for 2016 would have been guaranteed if he was on the roster Wednesday.
He was placed on injured reserve with a designation to return after suffering a torn MCL in the first quarter of the Raiders' Week 1 loss to the Cincinnati Bengals.
He finished his only season in Oakland with one interception, two passes defensed and 11 tackles.