After his career as a footballer, Ružnić became a football agent with his clients including; Josip Iličić, Jasmin Kurtić, Armin Bačinović, Dalibor Volaš, Aleksander Rajčević, Robert Berić, Aleš Mertelj, Aljaž Struna, Siniša Anđelković, Luka Krajnc, Elvis Bratanović, Anej Lovrečič, Jasmin Handanovič and Anton Žlogar.
Armin van Buuren | Armin Van Buuren | Armin Lemme | Armin Jordan | Armin Hansen | Armin Faber | Mohsen Armin | Hans-Heinrich Sixt von Armin | Armin Schreiner | Armin Geus | Armin Bačinović |