Competition for places at a side in the Premier League is perhaps no fiercer than at Chelsea right now. Enzo Maresca was able to change his whole side for the Carabao Cup tie against Barrow this week, however they were still an outfit that could go head-to-head with top sides. Those players were certainly not resting on their laurels too. Christopher Nkunku’s hat-trick put more pressure on Maresca to hand him a start soon. READ MORE: Christopher Nkunku shares what he told Malo Gusto to do vs Barrow that worked out perfectlyAll four of the starting attackers that night contributed to a goal, wi…