Nathan Ake will spend the season on loan at Watford after signing a new five-year deal with parent club Chelsea.
Chelsea has tied Nathan Ake down to a new five-year contract before sending the defender on loan to Watford.
The center back moved to Stamford Bridge as a 15-year-old and has featured on 12 occasions for the club, including playing in the UEFA Champions League and Europa League.
Ake, who spent a month on loan at Championship side Reading last month, has now committed his future to the Premier League champion.