Chelsea owner Roman Abramovich will test Atletico Madrid's resolve over star striker Sergio Aguero at the end of the season.
Abramovich sees the Argentina international as a future world star and is ready to commit a large chunk of his planned £100 million summer transfer budget to luring the youngster to London.

For his part, El Kun has maintained he is committed to Atletico, however Chelsea representatives are confident they can convince the player and his minders about moving to Stamford Bridge by outlining their long-term ambitions.