ucrative four-year-deal with a buy out clause of of 拢25m and would be seen as a replacement for Ilkay Gundogan who will miss the rest of the season with a knee injury. Paul Pogbas transfer to Manchester United in the summer for £86m has also helped boost the revenue streams however they did spend £75 on Gonzalo Higuain from Napoli. The Everton boss is set to become one of the biggest spenders of the January window. The Spaniard is currently out injured after having surgery on his chronic ankle problem in December, which ruled him out for three months, meaning he will return in February. But even Oscars?huge salary pales in comparison with the worlds highest paid player, Carlos Tevez. Is he good enough for United I think he is ready for the big clubs out there. and that he had to change his ways to get back to his best at Stamford BridgeCOSTA QUIT SHOCKDiego C. Getty Images6Dimitri Payet was at Marseille for two seasons before joining West HamGetty Images6It h. Getty Images3Faouzi Ghoulam is the Napoli star Chelsea have been looking at for six monthsThe Blues . to talk to?clubs across Europe and can sign a pre-contract during the January transfer window.