Transfer market expert Terry Gibson is convinced Diego Costa will rejoin Atletico Madrid.
The Spaniard has made it clear a number of times that his future at Stamford Bridge is over.
Manager Antonio Conte has already signed Alvaro Morata to replace him with recent reports claiming he also wants to make a move for Andrea Belotti.
"Chelsea have handled this badly," Gibson told a Sky Sports podcast.
"It has really depreciated his value in a market this summer where they could have got an absolute fortune for Diego Costa.
"The way it was done in terms of the alleged text message between Antonio Conte and Costa devalues the player's worth, and that was devalued even more by the fact he only wants to go to one club.
"And it pretty much looks like every other club in Europe have not bothered to make an offer to sign him, despite him being a top-quality striker, because everyone assumes he is going to be going to Atletico Madrid.
"I can't believe there is not a deal to be done now, they have a transfer ban until January, but it suits Atletico Madrid and Chelsea and it suits Diego Costa.
"And it seems inevitable that he is going to be playing for Atletico Madrid from January onwards, whether he goes on loan somewhere before.
"I can't see that now as it will take him a month to get fit from doing his own training back home, as he is based in Brazil at the moment and has not had a pre-season."
