The Blackhawks traded defenseman Erik Gustafsson to the Calgary Flames, the club announced Monday. In return, the Hawks acquired the earlier of Calgary's two third-round picks.

The puck-carrying defenseman had 26 points (six goals, 20 assists) with the Hawks this season after finishing last year with a career-high 60 points (17 goals, 43 assists). 

The 27-year-old blueliner carries a $1.2 million cap hit and will become an unrestricted free agent after this season. 

The Swede had 116 points (28 goals, 88 assists) in four seasons with the Blackhawks after being selected No. 93 overall in the 2012 NHL Draft. 

Gustafsson admitted his uncertain future was weighing on him in Chicago this season. 

"I don't know how I can't block it away," Gustafsson told NBC Sports Chicago earlier this month. "At the start of the year I was nervous going in, if I'm going to sign here or if I'm going to be traded or something like that. I think that just affected my game and I was thinking about that instead of thinking about my game on the ice."

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