Promising Chelsea left back Ian Maatsen has joined Charlton a season-long loan.
The 18-year-old Dutchman is highly thought of at Stamford Bridge after signing from PSV Eindhoven in 2018 and his move to the League One side will be his first loan spell.
Maatsen made his senior debut for the Blues in a 7-1 victory over Grimsby in the Carabao Cup last season and signed a new long-term contract until 2024 in March.
He follows in the footsteps of Jay Dasilva and Conor Gallagher who also joined the Addicks on loan from Chelsea.