Chelsea have announced the signing of midfielder Tiemoue Bakayoko from Monaco.
The 22-year-old, who played a leading role in Monaco's run to the Champions League semi-finals last season has signed a five-year contract at Stamford Bridge.
The France international has reportedly cost the Blues around Â£40million.
He told the club website: "I am very happy to be here and to join this great team. I have grown up watching Chelsea. Signing was the natural thing for me because it is a club I loved very much in my childhood."