Njoku (undisclosed) isn't slated to play in Saturday's preseason contest at Seattle, Chris Easterling of the Akron Beacon Journal reports.
Njoku has been dealing with some soreness since mid-August, which has kept him off the practice field in the meantime. With his lack of availability for the exhibition finale confirmed, he'll set his sights on a Week 1 matchup with the Cowboys on Sunday, Sept. 8. Over the last two campaigns with the Browns, Njoku has come on as a receiving threat with a combined 139 catches (on 203 targets) for 1,510 yards and 10 touchdowns in 30 regular-season games.