It was not one excellent season, it was two.
2010-11 and 2011-12, BVB won two league titles and one DFB Pokal, and Gotze was one of their best players and rated as one of the best young players in the world.
Yes, he was quite average at Bayern, but we all know he was injured and low in confidence and morale.
Don't we all say, "form is temporary and class is permanent"??
If he is shit, we need to sell at least half of our team immediately.