Brighton have signed 19-year-old defender Tariq Lamptey from Chelsea on a deal until 2023.
Lamptey made his senior Chelsea debut in a 2-1 win against Arsenal in the Premier League on 29 December.
A member of England's squad at the 2019 Under-19 European Championships, he has also made two appearances in the FA Cup this season.
"We're really pleased to have secured the signing of a really exciting young talent," said manager Graham Potter.
Albion boss Potter added: "With his pace and technical ability, Tariq provides us with another option on the right side of the pitch both at right-back, where we already have good competition, and also further up the pitch."
Brighton have also recalled striker Jurgen Locadia from his loan spell with Bundesliga side Hoffenheim along with Slovenian forward Jan Mlakar, who has been on loan at Queens Park Rangers.
Mlakar did not start a Championship game after joining QPR in July.
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