Costa has been linked with a return to Atleti in recent weeks. He has been yearning for a move to his previous club Atletico Madrid.
The Blues' top scorer will be unable to play until January as Atletico are now under a transfer embargo.
So far this transfer window, the Blues have already lost out to Manchester United in the race to sign Belgium striker Romelu Lukaku from Everton, even though Chelsea matched Manchester Utd's £75 million bid.
And yesterday Chelsea confirmed the signing of Monaco powerhouse Tiemoue Bakayoko. However, it is likely that the Belgian youngster will again be used as backup and a more household name will be brought to Stamford Bridge.
PayPal partners Samsung Pay
Since Samsung's mobile payments service has MST and NFC support, it can work with nearly all card terminals in supported markets. Samsung Pay, the mobile payments service of the world's largest handset maker, was launched in India in March this year.
Procter & Gamble Co (PG) Proxy Fight
Norges Bank bought a new position in Procter & Gamble Company (The) during the fourth quarter worth approximately $1,918,188,000. According to the analysts, Procter & Gamble Company (NYSE:PG) is expected to announce $0.78/share EPS for the current quarter.
Newcastle United 'preparing £10m Sheyi Ojo bid'
Ojo was part of the World Cup winning England U20 squad this summer and is highly-rated by many behind the scenes at Liverpool . Ojo and Murphy have both appeared on Newcastle's wishlist, with Rafael Benitez determined to strengthen his options out wide.
Ryan Phillippe hospitalized for leg injury
While the Shooter star doesn't seem to be in the happiest of moods, he gives the camera a solid thumbs-up with his right hand. He said in an interview with Collider published in November that he insisted on doing all of his own stunts for the show.