As expected, the Cleveland Browns officially placed quarterback Brian Hoyer on injured reserve Saturday. Taking his spot on the 53-man roster is wide receiver Charles Johnson, who was signed off of the Green Bay Packers' practice squad.
Johnson is a big receiver at 6-2, 215 pounds. He was taken in the seventh round of the 2013 NFL Draft by the Packers and spent all of camp with them. I don't think the Browns are too interested in Johnson as a long-term receiver, though: if they needed help at the position, they would have just promoted Josh Cooper or Tori Gurley from their own practice squad.
Why sign Johnson, then? Because next week, the Browns will travel to Lambeau Field to take on the Packers. When the Browns do the scout team offense for the Packers next week, they can ask Johnson to run some of the things the Packers are accustom to running. After that, I would expect Cleveland to part ways with him; that roster spot will be temporary anyway until offensive guard Jason Pinkston is eligible to come off the short-term IR list in a couple of weeks.