Chelsea midfielder Frankie Runham has signed pro terms.
Runham is Chelsea's youngest UEFA Youth League goalscorer - at 15 - when he struck against Dinamo Zagreb in November 2022.
The England U16 international has trained with the first team this season.
Blues youth chief Jim Fraser told the club's website: "We are delighted Frankie will continue his development at Chelsea.
"He has consistently showcased his versatility and quality for our Under 17s and 18s and we look forward to seeing even more as this season progresses."