Chelsea supporters are just hours away from seeing their side in action under a new manager for the first time. The preparation for Enzo Maresca’s opening friendly as Blues manager against Wrexham is almost over, and the players will be looking for as dominant a start against the lower-league side as they enjoyed 12 months ago. Supporters will no doubt be eager to get a good look at the system the Italian is going to look to play with his new side at Stamford Bridge. READ MORE: How to watch Chelsea vs Wrexham: Enzo Maresca’s first game in charge of the BluesSources have been impressed with the…