The 24-year-old is one of a whole host of big-money signings to have made the switch to Stamford Bridge.
He was joined by fellow Germany international Kai Havertz, as well as Ben Chilwell, Thiago Silva, Malang Sarr and Xavier Mbuyamba.
The Blues’ Premier League campaign got off to a good start with a 3-1 win over Brighton, despite not being a wholly convincing performance.
A big test comes at Stamford Bridge on Sunday afternoon when Frank Lampard’s side take on champions Liverpool.
Werner says it would be unrealistic to expect Chelsea to win the league this season and expects Lampard – similarly to Reds boss Jurgen Klopp – to build his side over time.
‘If it works anyway, all the nicer. But that’s not what the club expects.
‘With our Chelsea project, too, we want to develop step by step so that we have greater chances for the title after each season.’