Gustafsson was 2-0 with a 1.99 goals against average in three games this season for the Iowa Wild. The sixth-round pick in the 2010 draft played in his native Sweden last season and has not appeared in an NHL game. He'll be the backup to Niklas Backstrom when the Wild play at Chicago Saturday.
Coach Mike Yeo said after practice Friday that Harding was feeling better but won't travel to the game.
Backstrom's relief appearance for Harding Thursday in the win over Carolina was his first action since he suffered a lower-body injury Oct. 8.
He's only 17 but he can see the ice so well and he moves the puck and goes to the open ice all the time, so I just think he's a player that is ready to play in the NHL. I'm really looking forward to coaching someone like this.
— U.S. National Junior Team coach Ron Wilson on Auston Matthews, the projected No. 1 pick of the 2016 NHL Draft