Atletico Madrid refuse to give up on landing Chelsea striker Diego Costa.

Don Balon says the Blues forward remains Diego Simeone's top target despite Chelsea's insistence that he is not for sale.

Antonio Conte has made it clear he wants to keep the 27-year-old but Atleti still see a situation in which he may become available.

With Romelu Lukaku said to be close to re-joining Chelsea, the La Liga side see his arrival as their big chance for Costa.

The Belgian forward could cost as much as £40m and would surely become the automatic first choice as Stamford Bridge.