Reports in Italy suggest Costa has been offered to Napoli and Inter Milan.
Fiery striker Diego Costa has reportedly moved a step closer to leaving Chelsea, with Italian newspaper Corriere Dello Sport claiming he has been offered to Serie A duo Napoli and Inter Milan, as the Blues look to fund a move for long-term target Romelu Lukaku.
The 27-year-old has already been linked with a move to former club Atletico Madrid this summer, but agent Jorge Mendes is understood to have turned his attention to Italy.
Napoli are in the market for a striker after selling the talismanic Gonzalo Higuain to Juventus, while Inter Milan are reportedly braced to lose Mauro Icardi.
But despite Costa being reportedly unsettled at Stamford Bridge, he did his best to hide it during the weekend pre-season win over Werder Bremen, netting on the stroke of half-time in a 4-2 victory.
Happy to win our last pre-season game! I can't wait to start the season! ⚽️ Come on Chelsea!! pic.twitter.com/wkU3jaeXKR— Diego Costa (@diegocosta) August 7, 2016
Afterwards, he took to social media to suggest he is focused on starting the new season, which is Chelsea's first under new boss Antonio Conte.
He said: "Happy to win our last pre-season game! I can't wait to start the season! Come on Chelsea!!"
Nevertheless, should Chelsea seal a deal for Lukaku, who is valued at around £75 million by Everton, it could still convince Costa that his future lies elsewhere.