MILAN — Inter Milan goalkeeper Josep Martínez was involved in a tragic accident on Tuesday that left an 81-year-old man dead near the club’s training facility in Appiano Gentile, just outside Milan. According to Italian media reports, the elderly man was using an electric wheelchair when he veered from the designated cycle path into the roadway, where Martínez was driving. Investigators believe the man may have suffered a sudden medical episode moments before the collision. Martínez, 26, immediately stopped his vehicle and, along with other motorists, rushed to assist the victim. Emergency services, including an air ambulance, arrived quickly, but…