Ruben Loftus-Cheek, a Chelsea midfielder, has resorted to social media to express his feelings about wearing the Blues captain’s armband for the first time during the FA Cup victory over Chesterfield. At halftime, the 25-year-old stepped in to replace Mateo Kovacic, who had been given the armband from the start. Loftus-Cheek used to Instagram to express his joy at captaining his boyhood club. undefined He expressed himself as follows: “It’s…