DORTMUND, Germany — Borussia Dortmund says it has signed teenage midfielder Emre Mor from Danish side Nordsjaelland.

Mor was born in Denmark but plays for Turkey.

He signed a contract through 2021. Financial details were not given.

The 18-year-old midfielder becomes the fifth newcomer in Dortmund's ranks. The Bundesliga runner-up already has signed Marc Bartra, Sebastian Rode, Ousmane Dembele and Mikel Merino.