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.

Guiu becomes the Black Cats’ ninth signing of the summer.

The teenager came through Barcelona’s famous La Masia academy and scored just 33 seconds after coming on to make his debut for the club in a 1-0 win against Athletic Bilbao in October 2023.

After moving to England, he scored three goals against Shamrock Rovers in the Conference League last season to become Chelsea’s second youngest player to net a hat-trick.

Sunderland sporting director Kristjaan Speakman said: “In a loan acquisition, we not only have to convince the player but also the parent club, and we thank Chelsea for placing their trust in us.

“Most importantly, Marc wanted to come to Sunderland and be a part of our club. The competition for his signature was significant and he had many high-quality options.

“Marc’s a progressive striker who has key attributes that align with the role in our team.”