Sadio Mane struggles in the Bundelisga is not down to feeling comfortable or new environment; instead it has been down to niggling injuries; the Bayern medics have been unable to manage Sadio Mane fitness compared to his time at Liverpool; Going into his second season; i believe Sadio Mane fitness will be better and improve, he will already be accustomed to the training modules there and can get his fitness managed better. I am sure he prefers working with Tuchel than returning to the merseyside.