The 20-year-old has been a revelation since joining White Hart Lane from MK Dons in 2015 and has taken the Premier League by storm. Last year was his best goal return in front of goal for Slaven Bilics men, netting nine times. amford BridgeArsenal have been tracking the Swiss international for the past couple of months, but the Blues have decided to move quickly to steal a march on their London rivals. ere is even an offer from China if he wishes to follow the likes of Oscar and Carlos Tevez. Chelsea sold Oscar to Shanghai SIPG – which officially went through today – for £52m … but the Brazil midfielder was not first-choice under Antonio Conte. But for the right price, Mourinho would still be keen for extra cover in their defensive ranks, especially now that the impressive Eric Bailly is off to the Africa Cup of Nations. The Swede?travelled for the recent cup clash with Paco de Ferreira, but was left out of the squad. The Sweden international is a classy ball-playing defender. and that he had to change his ways to get back to his best at Stamford BridgeCOSTA QUIT SHOCKDiego C. efensive crop of Phil Jones, Marcus Rojo, Chris Smalling and Eric Bailly into an even tighter unit.