(FILE) - Leverkusen's Kai Havertz attends his team's first training session at the training ground in Leverkusen, Germany, 23 July 2020. According to reports on 04 September 2020, 21-year-old Leverkusen attacking midfielder Kai Havertz is set to sign for Chelsea. EPA/SASCHA STEINBACH *** Local Caption *** 56232640