data-mm-id=”_k746fz1h6″>According to CBS Sports' Jason La Canfora, Mike McCarthy is planning an NFL comeback. The former Green Bay Packers boss is reportedly watching film and building a potential staff in anticipation for a 2020 comeback. So which teams could most use McCarthy's services? Washington RedskinsWe might as well start with the one team that is more or less guaranteed to have a vacancy, having already seen the canning of Jay Gruden. Washington is currently is a state of patience when it comes to potential franchise man Dwayne Haskins. The team has finally allowed him to take the field, but Haskins has struggled in the early going, despite having the services of fellow Buckeye Terry McLaurin at receiver. McCarthy's experience with Aaron Rodgers and his transit…