The Sweden winger was scouted by Tottenham at the end of last season.
"Next season I have ambitions of playing more football for Fulham, that's my goal," he told the official website. "I played a fair bit last season, but every player wants to play more don't they? I'm no different.
"I think I've shown what I can do and, of course, there's a lot more to come from me. I'm a young player, so I'm still developing. But at the same time, I'm confident in my ability and know that I can play my part for the team."