Chelsea defender Levi Colwill has been speaking about his new boss Enzo Maresca after having a couple of weeks to work with him. Enzo Maresca replaced Mauricio Pochettino as Chelsea manager last month and is now getting the Blues ready for their pre-season tour of the United States. Levi Colwill will be part of the squad that flies over to America and will be hoping to show Maresca that he can be a solid central defender for him. The 21-year-old spent a lot of time on the left flank. However, Colwill says he struggled playing at left-back, with the Englishman being a natural centre-back. Compe…