Manchester City winger Leroy Sane and Bayer Leverkusen wonderkid Kai Havertz in the upcoming transfer window, according to club legend Lothar Matthaus. The Bundesliga champions made their interest in the former Schalke star public last summer before an injury in the Community Shield against Liverpool sidelined Sane indefinitely.Speculation over his future refuses to die down and various Bayern Munich officials have spoken about Sane's future in recent months.