Watford have announced the signing of Chelsea midfielder Nathaniel Chalobah on a five-year deal for an undisclosed fee.
The 22-year-old, who has been at Stamford Bridge since the age of 11, made 15 first-team appearances for the Blues last season, although he only started one game in the Premier League.
Chalobah enjoyed a fruitful loan spell with the Hornets during the 2012-13 season, making 42 appearances and scoring five goals, and he has now sealed a permanent switch to Vicarage Road.
Watford announced the news in a statement on Thursday, describing the deal - said to be in the region of £5m - as one they were "delighted to confirm" and revealing that he will wear squad number 14.
Chalobah, who starred for the England Under-21s side during the recent European Championships in Poland, had been offered an extension to his contract at Chelsea.
Germany
Switzerland
Hungary
Scotland
Spain
Italy
Croatia
Albania
England
Denmark
Slovenia
Serbia
Austria
France
Netherlands
Poland
Romania
Belgium
Slovakia
Ukraine
Portugal
Turkey
Georgia
Czech Republic