Arsenal are chasing two Kustosija prospects.
Index.hr says forward Lovra Chelfi, 17 and midfielder Niko Tomaevi, 16, are the subject of Arsenal's interest.
The Gunners had scouts in the stands as Kustosija played Hajduk Split yesterday in the final round of Croatian Junior League season.
Scouts from Liverpool, Aston Villa, Dortmund, Valencia and Lille were also in attendance.
Kustosija officials believe the duo are worth 2m each and will insist on a percentage of sell-on rights.