Chelsea’s pre-season tour of the United States reached its conclusion on Wednesday with a defeat to Real Madrid, and it’s been quite a frustrating summer so far for one player in particular. Chelsea leave the US with one win, one draw and three defeats from their friendly matches. Most importantly, new head coach Enzo Maresca has had the time to work his squad of players. The Blues will now face Inter Milan at Stamford Bridge this Sunday in a final friendly before the Premier League begins a week later. One of the most interesting dynamics in the squad going into the new campaign is the midfie…