Jones suffered a posterior cruciate ligament (PCL) injury to his knee on Sunday and didn't return to the game. A knee sprain to a player like a receiver usually requires some time off due to all the cutting and jumping, so if his knee is unstable, the team might hold him out.
The Packers are already going to be without Randall Cobb and they could really use James Jones this week. While the Browns haven't been great, their run D is among the best in the league and they might have success shutting down Eddie Lacy.
Fantasy impact: The bad news is that the Packers play the late game, so Jones' owners are going to have to put in a contingency plan. If he's unable to go, expect Jordy Nelson and Jermichael Finley to be very busy. Finley in particular could be a beast since Nelson will see Joe Haden on the right side of the field.