Chelsea’s summer signing has reportedly made a really positive impact in training sessions this season and is one of the hardest workers. On the pitch, it’s been a great start for Enzo Maresca as the Chelsea manager because the positive results are rolling in. The Blues go into Sunday’s Premier League match at home to Nottingham Forest on a five-game winning streak across all competitions. Therefore, we’d guess that everything is clicking in training on a weekday at Cobham, the club’s training centre. Journalist Fabrizio Romano recently claimed on The Debrief that Chelsea’s players are very ha…