Hallander signed a five-year contract with Timra of the Swedish League on Friday, Seth Rorabaugh of TribLive.com reports.
Hallander was summoned by Pittsburgh on Thursday, Penguins radio play-by-play announcer Josh Getzoff reports.
Hallander returned to AHL Wilkes-Barre/Scranton's lineup Wednesday, Taylor Haase of DKPittsburghSports.com reports.
Hallander (undisclosed) was released from hospital Saturday after he was stretchered off the ice in AHL action Friday night.
Hallander (undisclosed) was stretchered off the ice against AHL Charlotte on Friday, Taylor Haase of DKPittsburghSports.com reports.
Hallander (lower body) has been sent to the AHL, according to Seth Rorabaugh of TribLive.com.
Hallander (lower body) is a game-time decision for Tuesday's contest against Toronto.
Hallander, who was previously sidelined due to illness, is being evaluated for a lower-body injury, per Pens Inside Scoop.
Hallander will miss Saturday's game against Montreal because of an illness.
Hallander was recalled from AHL Wilkes-Barre/Scranton on Monday.