Atletico Madrid have submitted a final offer worth €65million to Chelsea for former striker Diego Costa, according to a report in Spain.

According to Marca, Atletico are hoping to secure the signing of Costa this week, although he will not be able to officially sign for the La Liga club until January.

Atletico are hoping Chelsea will give their new €55m up front offer, with €10m in add-ons, the green light so the 28-year-old striker can fly from Sao Paulo to Madrid to talk terms.

The report claims the striker’s future will be resolved by the end of the the moth with the Spain forward still in Brazil, having yet to return to Chelsea.

The same publication claimed Atletico were awaiting a response from Chelsea after lodging a €60million offer last Thursday.

We can only assume the Blues turned down Atletico’s latest offer and have returned with a “final offer”.

Costa, who has been named in Antonio Conte’s Premier League squad, did not board his scheduled flight from Sao Paulo to London last week.

Having left Atleti for Stamford Bridge in 2014 after winning La Liga, Costa has repeatedly expressed a desire to return to Madrid throughout the summer.

The forward fell out with Conte after he was told he was not wanted by a text message sent by the Chelsea boss during the off-season.

But the Blues insist it was decided in January, with the striker and his agent, Jorge Mendes, that Costa could leave this summer.

Costa still has two years remaining on his contract. As a consequence, he has been ordered by Chelsea to return to London, get himself match fit and make himself available for selection to give himself any hope of returning to Atletico.

But Costa says his former club are being priced out of a move by the Blues.

“I’ve demonstrated I care for Atletico and have interest in playing for them,” he told ESPN Brasil last month.

“But if Atletico and Chelsea don’t come to an agreement and Atletico 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.

“I know that this (big effort) will happen, but if it’s to pay the amount that Chelsea want it won’t be possible.”

Costa has won two Premier League titles in three years at Chelsea, scoring 59 goals in 120 appearances. He has 52 Premier League goals.

Asked the fee Chelsea are requesting, Costa said: “I don’t know, but my agent said that Chelsea want something that Atletico can’t get near.

“What I know is that this offer Chelsea will get is bigger than what they paid (for Costa in July 2014).”