The Cleveland Browns signed Charles Johnson off the practice squad of the Green Bay Packers last Saturday.

When Johnson underwent his physical with the Browns, they discovered he had a torn ACL. Johnson has been placed on the non-football injury list.

NFL rules say that players signed off practice squads must be there for three weeks, which means Johnson will use a roster spot.

The Browns play the Packers this week.

Johnson took the roster spot of Brian Hoyer, who is also out for the season with a torn ACL.