According to The Sun, the club’s Russian billionaire owner Roman Abramovich wants to give coach Carlo Ancelotti a big-name signing.
According to the report, Atletico is likely to turn down the offer and tell Chelsea they must match the 50 million pound get out clause for 21-year-old Aguero.
Chelsea’s offer would eclipse Manchester City’s 32.5 million pound signing of Robinho as the British record.