When he was good he was excellent but didn't get a gig better than Burnley because he just doesn't turn up often enough, otherwise even the likes of Palace, Fulham or Brentford would have taken a chance on him.
He's got all the tools in his locker to be a world beater except the mindset to actually go and do it.
He'll end up with a nice gig at somewhere like FC Twente or Wolfsburg, mid table in a half decent league and get plenty of caps for Norway but he'll be one of these who could have been so much more.