Chelsea may look to reach a compromise agreement with Atletico Madrid over Thibaut Courtois if it means landing Diego Costa this summer.
According to talkSPORT's correspondent Graham Hunter, Chelsea have included a clause in Courtois's contract that means Atletico must pay £6m if they want to play the Belgian international against his parent club.
There's a chance the two clubs could meet in the Champions League semi-finals later this month, Chelsea and Atletico Madrid both advanced following victories over Paris Saint Germain and Barcelona respectively.
But rather than pay the one-off £6m fee to allow Courtois to play in the fixture, Chelsea and Atletico could look to do a deal involving Spanish international Diego Costa.
Chelsea boss Jose Mourinho has been heavily linked with the forward, and is expected to make a move at the end of the season. He has publicly voiced his frustration at his current strikers, and could spend big money to bring a world-class forward like Costa to Stamford Bridge this summer.
By waiving the Courtois fee, Chelsea may look to get something knocked off Costa's asking price, which is currently a reported £32m.
Chelsea and Atletico Madrid await the Champions League draw, alongside Bayern Munich and Real Madrid, which takes place on Friday.