Burdon is by no means the finished product. He's obviously still shipping the goals, and as of yet is no Peter Schmeichel.
But the fact is, he has much more experience at arguably a much higher level in France.
I only believe Hanley needs another year or two in the First Division by watching him first hand, and I don't believe personally he's ready for the step up yet. There are better goalkeepers in the First Division in my opinion.