From the end of the season, Chelsea knew that it would want a talented attacker. And in this position, Sergio Aguero of Atletico Madrid seems to be the perfect match. The Argentinian superstar is believed to be the primary target of the "blue" and already there have been negotiations with the spanish team. But as how much Chelsea needs the player so much Real Madrid wants him. It's going to be a great battle for his signature and definitely it would be rough.