Boudreau said Monday was the first time since Traverse City that he has seen him on the ice. Olofsson scored a goal in the first game of the tournament then was lost to injury later in the same game.
"He looks like a typical Swede: very mobile, tall, thin," Boudreau said. "And I'm sure he's got good hockey sense. I don't know when he's going to play, but he deserved it, so that's why he got called up."
Olofsson scored a goal in his last game with Iowa on Sunday and had three goals and nine points in 21 games this season.
He has already surpassed his goal total of two that he scored in 52 games last year, and after being a minus-11 in 2015-16, he's even so far this season.
"Everyone around me down there started playing better," Olofsson said. "The guys around me made it a lot easier, and I had a few games to get things back the way I wanted in terms of where I lost last year from my injury."
A second-round pick of the Wild in the 2013 draft, Olofsson made his NHL debut last season and played two games with Minnesota.