"Mattias is a strong and versatile player who always makes his presence felt when he is on the ice," said Nill. "His intelligence and determination have built the foundation of a tremendous, young player, and we are thrilled to have him returning as a member of the Stars."
The forward missed the entire 2016-17 season due to a knee injury which he sustained during the preseason. During his rookie campaign in 2015-16, the forward registered 29 points (15-14=29) in 73 regular-season games and finished the season tied for 11th among League rookies with 15 goals and ranked 14th in points (29). Additionally, he shared second among all rookies and fourth on the Stars with a +12 plus/minus rating, which ranked as the fifth-best total by a rookie in franchise history.