Sunderland have signed Chelsea forward Marc Guiu on loan for the 2025-26 season.
The 19-year-old Spaniard, who joined the Stamford Bridge club for £5m from Barcelona in 2024, scored six goals in 16 matches for the Blues last season.
Describing himself as "a powerful striker" and "natural goalscorer", Guiu said of his move: "This year is a huge opportunity for me to help take this team where it truly deserves to be, and I can't wait to get started."
Sunderland achieved promotion to the Premier League by beating Sheffield United in the Championship play-off final in May.