[3] On 14 July 2011, Golubar made his European debut in the Europa League second qualifying round against Moldovan side Iskra-Stal.
[2][3] In his first season in Slovenia, he made 24 appearances and scored 13 goals, tying Amer Krcić for top scorer in the league.
[5] In the 2013–14 PrvaLiga, Golubar made 32 appearances for Zavrč, scoring five goals, and helping the club to a fifth-place finish, missing out on a Europa League spot by five points.
[3] Shortly after leaving Olimpija, Golubar returned to Zavrč for a second spell, making 17 league appearances and scoring four goals that season.
[3] He helped Varaždin to a second-place finish in the Croatian Second Football League, earning a spot in the promotion playoff against Istra 1961, which they lost 3–2 on aggregate.
[3] On 23 January 2019, Golubar and Varaždin agreed to the mutual termination of his contract so that he could pursue opportunities abroad.