Hamburg have warned Chelsea off teenager Jann-Fiete Arp.
Hamburg teenager, 17, netted 28 times in 25 games for the youth side, and has attracted plenty of attention from the Premier League - despite having never played for the senior side.
However, President Heribert Bruchhagen has moved quickly to dismiss any prospect of Arp leaving the club.
He said: "He will stay with us. His advisor Jürgen Milewski has promised me and sporting director Jens Todt."