The Barclays Premier League club have confirmed that the 22-year-old Swedish international - who was on loan at the club last season - has signed a two-year contract.
Latics manager Chris Hutchings told his club´s official website, www.wiganlatics.co.uk said: "There was a lot of interest in Andreas, which is why I wanted to get this done quickly. Andreas has got bags of potential and I think he has the ability to make a real impact in the Premier League."
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