Overview
- Middlesbrough confirmed the permanent arrival of Castledine from Chelsea, with the Blues also announcing his departure.
- The fee is reported to be just under £1 million, with a future sell‑on clause benefiting Chelsea.
- Castledine goes straight into Kim Hellberg’s first-team plans after producing 12 goals and five assists in 27 games at Huddersfield.
- As an under‑21 signing, he does not need to occupy a place in Boro’s 25‑man EFL squad list.
- Hellberg praised his goal threat, and Castledine said he feels ready to contribute immediately after completing his medical and paperwork.