The 24-year-old spent last year on loan at Championship side Nottingham Forest, with first-team opportunities hard to come by at Stamford Bridge.
|BLUE TO BE THE COLOUR?|
|9/4||Chelsea are 9/4 with BetVictor to win the Premier League|
The defender joins new Blues signing Christian Atsu in joining Vitesse on loan before the transfer deadline.
Chelsea have also allowed Mexican midfielder Ulises Davila to go out on loan for a second season, this time to Spanish side Cordoba, after making 37 appearances with the Segunda Division team Sabadell last term.