Njoku, a third-year player out of Miami, appeared in the first two games this season and recorded four receptions for 37 yards and a touchdown. He suffered a wrist injury in the team's Week 2 contest against the New York Jets. Njoku was placed on injured reserve on Sept. 20 and was designated for return on Nov. 20.
Jackson appeared in six games and recorded three special teams tackles.
Check out photos of the Browns preparing for their game against the Bengals Sunday by team photographer Matt Starkey