Kwanga only for money?

As I watch Kwanga in Germany he is one of the best midfielders in the world! Man Utd fans dont know football if you dont think this guy is good! His passing is shot and he scores always. £12 Million for him rising up to £18 Million , barain of the century?! He was the second highest goal scorer as a midfielder behind Ribery but he is only 21! If you are a Man Utd you should be excited!