Chelsea are reportedly considering a move for Red Star Belgrade midfielder Marko Grujic.
The 19-year-old, who is a product of the Red Star academy, has made 18 appearances for the Serbian club since making his debut in 2013.
According to Italian news outlet Tutto Mercarto Web, the Blues have sent scouts to watch the youngster in the Serbian SuperLiga.
The website also claims that Bundesliga side Hamburger SV considered a move for the player in the summer, but Grujic opted to sign a new deal at Red Star instead, which could keep him at the club until 2018.
Grujic has made 15 international appearances for Serbia at youth level.