Mauricio Pochettino suffered his heaviest defeat as Chelsea manager yesterday after watching his side lose 5-0 against Arsenal. It has not been a good last few days for Mauricio Pochettino and Chelsea, who were also knocked out of the FA Cup by Manchester City last Saturday. However, that game, which ended 1-0, was nothing compared to what happened at the Emirates last night. Pochettino made multiple changes to his side, including at the back, with Thiago Silva and Trevoh Chalobah two players to have dropped out. Chelsea fans will have to get used to not having Silva in their team, as the cent…