Chelsea are stepping up their bid for Atletico Madrid star striker Sergio Aguero.

Chelsea and Inter Milan are both competing for the Argentina international, whose buyout clause was recently hiked up to £37 million.

Italian sources say Blues owner Roman Abramovich is willing to go as high as £30 million for Aguero, though neither he nor Inter president Massimo Moratti are willing to meet the striker's get-out clause.

Atletico president Enrique Cerezo has declared plans of a major overhaul for the current squad, which could force the sale of El Kun if coach Javier Aguirre fails to guide his team into the Champions League places this season.