Initial reports suggested the deal was a club-record £89m, however, the BBC claims the fee Chelsea are paying Leverkusen is actually £71m including add-ons - which sounds like an excellent piece of business for a player of Havertz's quality.
"First of all: Thank you very much", Havertz said. For me it is a new country, a new culture and it is hard maybe in the first two or three weeks, but then I think I just want to play football and have fun with the boys.
The 33-year-old's contract will expire at the end of next season after he signed an extension in May, but he is expected to find playing time even harder to come by after the club signed Werner from RB Leipzig for £47.5 million ($59m).
Known as a versatile midfielder who can play on the right and up the middle, Havertz is likely to form a fruitful partnership with Werner at Stamford Bridge. "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", Havertz told the Chelsea website. "I think he is a very humble person and a great guy and I can't wait to play with him and learn from him".
Jurgen Klopp was really eager to work with Timo Werner and recent revelations have suggested that Ole Gunnar Solskjaer also met with the striker in Berlin in order to try and persuade him to join United.
"We have some very good players here and the manager is there to show us the way, and help us improve". Hopefully we can have many successes. It's hard maybe in the first two or three weeks, but then I just want to play football and have fun with the boys, and of course I want to have big success.