The Premier League leaders have made contact with the left-back’s agent to sound out whether he would be willing to make a January transfer window switch to Stamford Bridge. Still just a teenager, he leads and controls the back four. Getty Images6Mesut Ozil also only has 18 months left on his current dealAP:Associated Press6Gonzalo . owing death of his mumCHELSEA - FIVE THINGSWillian stepped up, Cesc Fabregas hit an assist milestone, but Antonio Conte's men looked tiredSAINT BERNARDChelsea tracking Fiorentina's Federico Bernardeschi ahead of move for Antonio Conte favouriteCostly CostaDiego Simeone reveals Atletico Madrid did everything to sign Diego Costa from ChelseaBat's The WayAntonio Conte backs Michy Batshuayi to continue Chelsea's title charge in place of Diego Costa Costa is Brazil-born and the Chinese believe Brazilian footballers are best suited to their league. ready a set-piece specialistAmine Harit, Nantes, 19Another member of Frances Under-19 European Championship-winning side, Amine Harit was virtually an unknown in the summer. With that in mind, Football Whispers has highlighted seven wonderkids from Ligue 1?who will soon be on the radar of every top club in the Premier League. The Belgian striker,? rated at £80m, equalled the legendary Duncan Fergusons 72 goals for the club. Reuters17Malcom is a box of tricks for BordeauxGetty Images17Three goals and an assist early on show. us fixtures, results and live match commentaryMourinho knows the player well and is hoping to steal a march on everyone else interested by making an early offer. But even Oscars?huge salary pales in comparison with the worlds highest paid player, Carlos Tevez.