Sunderland are keeping tabs on Serbian wonderkid Luka Adzic.
The Black Cats sent scouts to watch the 18-year-old Crvena Zvevda youth prospect in the weekend Eternal Derby against bitterest rivals Partizan Belgrade.
But they face a battle to land the youngster, with the likes of Arsenal and Manchester City also keeping an eye on Adzic's progress.
A left winger, who can also play as a striker, Adzic is seen as one of the brightest lights in the Serbian game.
The youth international broke into the Red Star first-team squad at the back end of last season, but did not make his first appearance until November.
Since then he has come off the bench five times, scoring twice in the Serbian SuperLiga.
His impressive cameos have not gone unnoticed, with Sunderland just one of a host of European sides to send scouts to watch the talented kid.
As mentioned Arsene Wenger's Gunners are said to be keen, so too City, as well as last season's Premier League champions Leicester City.
Italian outfit Sampdoria, Sporting Lisbon, Anderlecht, Bordeaux and Alaves are also understood to have sent scouts to report on Adzic.
Adzic was an unused sub in the white hot encounter, as Red Star drew 1-1 with Partizan, maintaining their six point lead at the top of the division.