Arsenal have struck a deal for Hertha Berlin defender Leander Siemann.
The Daily Mail says Arsenal have agreed a £220,000 deal for Siemann.
The 15-year-old German centre back spent a week on trial at the club last month and impressed coaching staff.
Siemann, who has been offered a three-year contract, said: "I've dreamt about being a professional, and Arsenal is a huge opportunity."
Hertha Under 16 coach Frank Vogel said: "He is dynamic, strong and good in one-on-ones."