Possibly the greatest midfielder of his generation, Xavi Hernandez was at the heart of two of the greatest football teams ever, Barcelona and Spain. Although both Spain and Barcelona have a multitude of world class players, after Xavi retired, both the teams lost control in the center of the park. Barcelona overcame this in the treble winning season by going more direct and relying on the talents of Messi, Suarez and Neymar. But like this season showed, you lose control of midfield, your defence is under more pressure than usual.
The below video offers and excellent insight into the mind of Xavi Hernandez, how he sizes up a situation, how he knows the exact time to release the ball,etc.