By Jacob Leeks Mesut Ozil has undergone a remarkable body transformation to leave football fans amazed at his new bulging muscles. The former midfielder retired last year, having enjoyed spells at Real Madrid, Arsenal and Fenerbache during his playing career. He won La Liga and the Copa del Rey with Los Blancos and had a stunning run of four FA Cup wins with the Gunners. Ozil was also part of the Germany squad which won the 2014 World Cup before he retired from international football four years later. Since he hung up his boots for the final time, Ozil has clearly been filling his time by goin…