Career
Perošević started his career playing at youth level for his hometown club Osijek with whom he had signed a scholarship contract in February 2010. After injuries kept him out of action for a year, he returned for the second part of the 2011-2012 season. He scored his first goal in Prva HNL in a 2–1 defeat against Cibalia on 11 March 2012, converting a first-half penalty.
He finished the season as Osijek"s top league goalscorer with seven goals.