Enzo Maresca has adopted a ruthless approach at Chelsea, which has seen some players even train away from the first team, and he’s now told a player to improve in his pre-Brighton press conference. The Chelsea boss has really knuckled down at Stamford Bridge after the international break, and the results are starting to reflect his hard work. Chelsea have gone from a side who look vulnerable defensively and can’t finish their chances, to a side that now look ruthless in the final third and assured at the back. One player who has played a big part on the defensive end is Marc Cucurella, who Mar…