US teen Reyna extends Dortmund deal until 2025

"Dortmund are a big club that can challenge for titles and are in all the important competitions. Young players in particular have the chance to develop here," said Reyna.

"I have already learned a lot and want to learn more in future."

Reyna is keeping youthful company in Dortmund's attack alongside England winger Jadon Sancho, star striker Haaland, both 20, and English midfielder Jude Bellingham, 17.

He has already made 22 appearances in the Bundesliga, including creating three goals in a 4-0 win over Freiburg last month.

He also scored a goal and set up another for Haaland in the 3-0 win over Moenchengladbach on the opening weekend of the season.

"Gio's development in recent months has been incredible," said sports director Michael Zorc.

Reyna made his senior international debut last week against Wales, the day before his 18th birthday, he scored his first goal for the States on Monday in a 6-2 away win over Panama.

The teenage attacking midfielder has been in the Dortmund squad since January after transferring from New York City FC.

"He was already a very, very good player with a lot of potential at 17," said Dortmund coach Lucien Favre.

"If he continues like this, he will be very important for Dortmund in the next few years."