It was a game of two halves as far as Mauricio Pochettino and Chelsea were concerned last night as they returned to winning ways in the Premier League. It is hard to believe that across the 90 minutes, the manager will have seen enough to believe that what they are doing right now will be enough to help him win his first trophy in English football later this month. A second half brace from Conor Gallagher as well as a last-minute third for Enzo Fernandez secured all three points in the London derby, and marked the sensational turnaround from the first half display. It feels as if the half-time…