Wantaway Chelsea striker Diego Costa has told ESPN Brasil that the Blues are demanding a fee that Atlético Madrid, who he wants to rejoin, "can't get near".
Costa, who has been told by Chelsea boss Antonio Conte that he isn't in the Italian's plans, remains in his native Brazil despite being ordered back to West London to train with the Premier League champions' reserves.
Costa: I might have to look at options other than Atlético
The 28-year-old has made clear his desire to return to Atlético, who he left for Chelsea in 2014, but admitted in his interview with ESPN that he may have to explore other options if Los Rojiblancos "don't make a big effort" to get him.
"I've demonstrated I care for Atlético and have interest in playing for them," Costa said. "But if Atlético and Chelsea don't come to an agreement and Atlético don't make a big effort, I can't keep on wanting to play for a club that isn't going to make a bigger effort to try and sign me.
"It won't be possible" to pay what Chelsea are holding out for
"I know that this [big effort] will happen, but if it's to pay the amount that Chelsea want it won't be possible," said Costa, who did not reveal the club's asking price.
"My agent said that Chelsea want something that Atletico can't get near."