Chelsea have officially signed Kai Havertz from Bayer Leverkusen on a five-year deal worth £71m.
Havertz becomes Frank Lampard’s seventh signing this summer, joining Germany team-mate Timo Werner, Hakim Ziyech, Ben Chilwell, Thiago Silva, Malang Sarr and Xavier Mbuyamba.
“I am very happy and proud to be here,” Havertz said.
“For me it is a dream come true to play in a big club like Chelsea and I can’t wait to meet all the players and the trainers. Yeah, I am very happy to be here!”
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.”
The 21-year-old midfielder completed his medical with Chelsea on Sunday in London before joining up with Germany for their Nations League fixtures.
Havertz leaves Leverkusen with 36 goals and 25 assists in just 118 Bundesliga appearances since he came to the club in October 2016.