Bursaspor youngster Batuhan Altıntaş has agreed terms with HSV and joined the Bundesliga side on a four-year deal.
Altıntaş was left out of the Bursaspor squad this season and has been training on his own due to a dispute with the club.
The Turkish youth international spent six years at Bursaspor rising through the ranks before being spotted by HSV.
HSV have agreed a €400,000 transfer with Bursaspor for the 19-year-old.
The highly rated striker did not make a single appearance for Bursaspor this season in the Süper Lig .
Altıntaş, born in 1996 is the son of the former Galatasaray player Yusuf Altıntaş. The young striker has scored 19 goals in 51 international caps at a youth level.
The 1.87m tall forward was the strike partner of another Bursaspor teenage sensation Enes Ünal at youth level.
The Chelsea linked striker has an extraordinary international record, hitting the back of the net 24 times in 25 games for the Turkish
Ünal made his first appearance for the senior Turkish national team in the 2-1 win over Luxembourg on Tuesday 31 March.
The striker was recently listed in the Guardian as one of the 40 best young talents in world football.