Johnson was assigned to AHL Iowa on Monday.
Johnson was called up from AHL Iowa on Wednesday.
Johnson (upper body) was placed on waivers Tuesday, per Michael Russo of The Athletic.
Johnson is considered day-to-day with an upper-body injury, Michael Russo of The Athletic reports Monday.
Johnson (concussion) signed a one-year, two-way contract with the Wild on Monday.
Johnson (concussion) will become an unrestricted free agent Monday after not receiving a qualifying offer from Chicago.
Johnson (concussion) will visit the doctor Friday after suffering a setback, according to Ben Pope of the Chicago Sun-Times.
Johnson is making progress in his recovery from a concussion, Scott Powers of The Athletic reports.
Johnson (concussion) won't accompany the Blackhawks on the team's upcoming three-game road trip, per Mark Lazerus of The Athletic.
Johnson (concussion) will be out Friday against the Kings, per Charlie Roumeliotis of NBC Sports Chicago.