Koppanen was reassigned to AHL Wilkes-Barre/Scranton on Tuesday.
Koppanen was brought up from the AHL on Sunday but will link back up with the minor-league squad in short order. The 2016 fifth-round selection (No. 135 overall) has garnered six goals, 11 points and a plus-9 rating over 22 appearances in the minors this season.