With Gorica , Osmanović became the runner-up of the 1999-2000 season of the First League , played in the semi-finals of the 1999-2000 Slovenian Football Cup and played four matches on the UEFA Cup , making it one of the club 's most successful seasons .
With Gorica , Osmanović finished second in the 1999-2000 season of the First League , entered the semi-finals of the 1999-2000 Slovenian Football Cup and played four matches on the UEFA Cup .