Chelsea have signed attacking midfielder Kai Havertz from Bayer Leverkusen on a five-year contract in a deal worth about £71m.
Havertz's arrival at Stamford Bridge is the Blues' latest statement of intent as they seek to cut the gap on Liverpool and Manchester City at the top of the Premier League.
The Germany international has scored 36 goals and contributed 25 assists in 118 appearances for the Bundesliga club.
“I am very happy and proud to be here. It is a dream come true to play in a big club like Chelsea,” said Havertz.
Chelsea director Marina Granovskaia said: “Kai is one of the best players of his age in world football, so we are very happy that his future lies at Chelsea.
“He is an exciting, dynamic talent. We are delighted to be able to add his versatility and quality to the squad before the season begins.”
Havertz's move eclipses Werner's short-lived record as Germany's most expensive footballer after he joined Chelsea for 53 million euros in June.
That is not the only record Havertz has taken from Werner.
He succeeded the former RB Leipzig striker as the youngest player to make 50 and then 100 Bundesliga appearances since becoming Leverkusen's youngest ever player when he made his debut at 17.
