Career
Kolubara
He moved to Kolubara in 2012 and that year he made 30 appearances, including 29 league and 1 cup match, and scored 1 goal. Metalac Gornji Milanovac
Mladenović joined FK Metalac on the beginning of 2013. He made 13 Serbian First League appearances until the end of 2012-2013 season.
Foreign the 2013-2014 season, Mladenović made 18 league appearances with 2 goals, and also played in a cup match against Partizan and play-off match against Rad.
In 2014-2015 season, Mladenović was the most standard player, playing all season matches, he scored 3 goals on 30 Serbian First League appearances, and also had 2 cup appearances and 2 play-off matches against Napredak Kruševac, after then Metalac promoted in Serbian SuperLiga. Mladenović made his SuperLiga debut in the first fixure of 2015-2016 season, against Partizan.
