Jackson left Sunday's game in the second quarter after taking a blow to the head. He was later diagnosed with a concussion which meant he had to pass NFL mandated tests before he would be allowed to return to the field. After missing practice on Wednesday, Jackson apparently passed the tests as he was back on the practice field on Thursday.
His return is a huge boost for the Browns defense. Jackson has started all five games this season and has done a little bit of everything for Cleveland. He is second on the team with 31 total tackles, but leads the Browns in both sacks and interceptions. Jackson has 3.0 sacks already this season, just half-a-sack shy of his career-high.
The Browns rush defense struggled when Jackson left the game, so his return should help as they prepare to face the Bengals on Sunday.