Atletico Madrid president Enrique Cerezo has revealed the club are interested in signing Diego Costa.
Costa joined Chelsea in July 2014, for £32 million and helped them win the title.
And Costa has previously revealed he wants to go back to Atletico Madrid.
“We have a great relationship with our past players,” Cerezo told Spanish radio station Cope.
“Diego is a great player, but a Chelsea player. We will try to do our best and see what Chelsea say, it does not depend on us.
“We always try to bring the best players and Diego is one of them.”