Vejdemo, 23, has appeared in 30 games for the Rocket this season, posting eight goals and eight assists for 16 points. That's good for second on Laval in scoring behind Riley Barber.
A native of Stockholm, Sweden, Vejdemo is in his second season in North America. He put up 13 goals and 16 assists for 29 points in 66 games for Joel Bouchard's squad last year.
The 6-foot-2, 194-pound center played 150 games for Djurgarden in the Swedish Hockey League from 2014-15 to 2017-18, recording 19 goals and 28 assists for 47 points along with a plus-16 differential.
Vejdemo was Montreal's third-round pick (87th overall) in 2015.
The Club also announced that defenseman Otto Leskinen was reassigned to the Rocket.