Fantenberg has signed a one-year contract with SKA Saint Petersburg of the KHL.
Fantenberg (undisclosed) took line rushes during warmups and will play in Wednesday's Game 1 versus the Blues, Brendan Batchelor of Sportsnet 650 reports.
Fantenberg (undisclosed) joined his teammates on the ice Tuesday.
Fantenberg (undisclosed) was unfit to play in Friday's Game 4 versus the Wild, Iain MacIntyre of Sportsnet.ca reports.
Fantenberg (concussion) will be activated from IR and play Saturday versus the Bruins.
The Canucks placed Fantenberg (upper body) on injured reserve Friday, Jeff Paterson of TSN 1040 Vancouver reports.
Fantenberg suffered an upper-body injury and won't return to Thursday's game against Minnesota.
Fantenberg collected two assists, two shots on goal, four hits and two blocked shots in Sunday's 4-3 shootout loss to the Hurricanes.
Fantenberg will return to the lineup for Saturday's tilt in Buffalo, Thomas Drance of The Athletic Vancouver reports.
Fantenberg was a healthy scratch during Thursday's loss to the Panthers.