Blues blueliner Scott Perunovich will undergo season-ending surgery on his left shoulder.

The 22-year-old didn't get a chance to make his NHL debut this season but was able to get some time on the Blues' taxi squad. Perunovich was in his first professional career after three years with the University of Minnesota. He'll likely spend next season at the AHL level once he's healthy.

Blues prospect Klim Kostin remains on loan from the Blues with Omsk Avangard of the KHL, Lou Korac of NHL.com reports.

At this point, it seems unlikely that Kostin will return to the AHL this season. The 2017 first-round pick (31st overall) the last three seasons in the AHL following his draft selection, but he never showed enough to secure a consistent role with the big club. 

The 21-year-old is starting to find his game in his home country, as he's now produced eight points over the last three games, bringing his total to 17 points through 38 contests. This could provide the confidence that Kostin needs to make it at the NHL level. 

The 2021-22 season still seems like his best target at this time.