Chelsea boss Jose Mourinho's number one focus this window will be on securing the signing of Atletico Madrid striker Diego Costa.
According to Portuguese newspaper A Bola, the Chelsea manager will train all his efforts onto completing a deal for Costa before the close of the transfer deadline on Friday night.
The Blues have offloaded Kevin de Bruyne and Juan Mata for a combined £53m while bringing in Nemanja Matic and Mohamed Salah.
But a striker has always been thought to be a high priority for Chelsea considering the poor goal records of Fernando Torres, Samuel Eto'o and Demba Ba this term.
Costa, who is currently the second highest scorer in La Liga behind Cristiano Ronaldo this season, has been heavily linked with several Premier League clubs.
Recent reports have claimed that Chelsea are open to including Thibaut Courtois - the Belgian national team keeper currently on loan at the Vicente Calderon from Chelsea - as part of a deal for Costa.
The Brazil-born frontman has a €37m release clause in his Atletico Madrid contract, and he's now reportedly Chelsea's number one priority.
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