Kai Havertz has trained for Chelsea for the first time after completing his £72m transfer to the club.
The 21-year-old left Germany's national squad on Friday to confirm his arrival at Stamford Bridge.
The midfielder becomes the sixth new player at Chelsea this summer after the arrivals of Timo Werner, Hakim Ziyech, Ben Chilwell, Thiago Silva and Malang Sarr.
And the youngster could not hide his delight after making the move to west London.
He said: "I am very happy and proud to be here.
"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!"
And the German has already been in training at the club's complex at Cobham.
Most of the squad that are not on international duty have been given the weekend off but Havertz has been put through his paces.
Frank Lampard will be keen to get his new man fit and ready for their opening Premier League clash against Brighton.
The Englishman will have a wealth of attacking options at his disposal and expectations will have grown after his spending spree.
Chelsea finished fourth in the Premier League, as well as making it to the FA Cup final.
It comes after a number of pundits wrote the Blues off but Lampard will not have the luxury anymore.
Nevertheless, the arrival of Havertz has excited Chelsea fans tenfold - while club chief Marina Granovskaia was over the moon to get a deal done for the up and coming star.
Get the latest transfer news straight into your inbox!
Want to be on the ball with Jadon Sancho to Manchester United updates? Or perhaps you're a Chelsea fan wondering who on earth could join next?
Well then sign up for the brilliant new Daily Star Sport email newsletter!
From the latest transfer news to the agenda-setting stories, get it all in your email inbox.
How do you sign up?
It only takes a matter of seconds.
Simply type your email address into the box at the top of this article and hit 'subscribe'.
And that's it, job done. You'll receive an email with all of the top news stories every single morning.
You can find out more information on our email newsletter on this link here.
She 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 has proven pedigree in one of the best leagues in Europe, he plays for the German national side and 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."