The Swede was snapped up from Blackburn Rovers.
"I think Martin showed in the first period that he is the type of player who can play one further forward. He certainly gives us this option. It was disappointing not to have seen more of him during pre-season. We knew that at the time when he first arrived that he had picked up an injury towards the end of last season (at Blackburn) and perhaps we had to take things a little slower with him," said Hughton.