Germany Under-17 striker Jann‑Fiete Arp is interesting Chelsea.
The London Evening Standard says Arp is at Hamburg's winter training camp in Dubai, although is yet to receive a contract with the club.
Wolfsburg and Leipzig have shown an interest along with Chelsea.
The Blues snapped up former Everton youth teamer Kyle Jameson last week from Southport FC.
Arp has played for Germany at Under-16 and Under-17 level,