Howden secured a contract with Dinamo-Minsk of the KHL on Friday.
Howden wasn't extended a qualifying offer by the Jets and will become an unrestricted free agent.
Howden was returned to AHL Manitoba on Wednesday.
Howden was called up from the minors Saturday.
Howden signed a one-year, two-way contract with the Jets on Friday.
Howden (upper body) is back in the lineup Sunday against the Wild, Harvey Fialkov of the South Florida Sun-Sentinel reports.
Howden (upper body) will miss at least another week general manager Dale Tallon told reporters Wednesday, Harvey Fialkov of the Sun Sentinel reports.
Howden (upper body) didn't participate in the Panthers' morning skate Monday, and appears on track to miss the evening's contest against the Maple Leafs, Craig Davis of the South Florida Sun-Sentinel reports.
Howden will not return to Saturday's game due to an upper body injury.
Howden tapped home an empty-net goal to seal the victory over Washington on Tuesday.