Osmanović spent all of his playing career at Zagorje, formerly known as Proletarec, with whom he was the champion and thus qualified for the first season of the Slovenian PrvaLiga after Slovenia gained independence. With Gorica, he became the runner-up of the 1999–2000 season of the Slovenian PrvaLiga, entered the semi-finals of the 1999–2000 Slovenian Football Cup and played four matches in the UEFA Europa League, formerly known as the UEFA Cup, making it one of the club's most successful seasons. With Korotan, he won the Winter Futsal All Star League 2003 and entered the semi-finals of the 2002–03 Slovenian Football Cup. With Dravograd, he became the runner-up of the 2003–04 Slovenian Football Cup. He also worked with other managers, including Stanko Poklepović, to whom he was the assistant coach at Celje before taking over the position of head coach after Poklepović's departure from the club. He was also one of the first ten managers from Slovenia to receive the UEFA Pro coaching licence.[1]
Career
Osmanović began his football career playing for Zagorje. During his years at Zagorje, Osmanović won the West division of the Slovenian Second League in the 1990–91 season, earning a spot in the inaugural season of the Slovenian PrvaLiga. Before the 1992–93 season began, he left Zagorje and started his managerial career.[2] After receiving his Slovenian Pro License in 1994, Osmanović started his managing Rudar Trbovlje. Later he became the assistant coach to Stanko Poklepović in Celje in 1997, and replaced Poklepović in 1998 as the head manager.[3] With Gorica, Osmanović was the runner-up of Slovenian PrvaLiga, and went to the UEFA Europa League.[4][5][6] He brought Gorica to the semi-finals of the Slovenian Football Cup.[7][8][9][10][11][12]
In 2001, Osmanović switched from Gorica to Rudar Velenje, and in 2002, took over Korotan Prevalje, with whom he became the champion of the Winter Futsal All Star League 2003 and qualified for the semi-finals of the Slovenian Football Cup.
[13][14][15][16] In 2003, Osmanović went to Dravograd. With Dravograd, he was the runner-up of the Slovenian Football Cup after his team lost the first match against Maribor,[17] he won the second match, with a score of 4–3.[18] He stayed in the club until 2004.
In 2004, Osmanović entered Aluminij, where he worked until 2006. He went to Mura 05 in 2007, where he stayed until 2010.[19][20][21][22] In 2013, Osmanović returned to Aluminij.[23] With the club, he entered the semi-finals of the Slovenian Football Cup. In the 2017–18 season, Osmanović worked as the head coach of Fužinar.[24]