Gustavsson (illness) is expected to return to the lineup in Monday's road game versus Colorado, Jessi Pierce of NHL.com reports.
Due to Gustavsson's absence, Dylan Ferguson was Marc-Andre Fleury's backup in Saturday's 6-2 loss to Nashville. Ferguson returned to AHL Iowa on Sunday. Gustavsson was going to start Monday's matchup initially, but it's unclear if his illness changed those plans. He has posted a record of 18-9-3 with a 2.58 GAA and a .914 save percentage across 31 appearances this season.