Brazilian player Kaka gestures as he wears an AC Milan jersey after arriving in a private jet along with AC Milan chief executive Adriano Galliani (not pictured), in Milan, Sept 2, 2013. Kaka returned to AC Milan on Monday after four unhappy years at Real Madrid during which he went from one of the world's top players to an unhappy, over-priced, injury-prone reserve. [Photo/Agencies]