However, after an encouraging start to his Blues career, the goals quickly dried up.
The 24-year-old has now failed to score in his past 12 Premier League games, and has only netted against League Two Morecambe in his past 18 appearances for club and country.
His frustration has become increasingly evident in recent weeks. As Tuchel put it, Werner has lost his smile in England.
"If they miss the goals for a certain amount of time, it is not the same for them."
Tuchel is, thus, hoping that the presence of Low can prove decisive in ending Werner's goal drought.
The former Paris Saint-Germain coach had to fight hard to prise Low away from Red Bull, as the former Hungary international had played a key role in the energy drink's burgeoning football empire.