During the 1950s and 1960s, Ferhatović led FK Sarajevo to great heights, and became the club's best and most famous player, scoring 198 goals in 422 games.
His greatest personal achievement was becoming the lead scorer in the Yugoslav First League with 19 goals for FK Sarajevo in the 1963–64 season.
Ferhatović's retirement was one of the most important events in Sarajevo's sporting history, and the local newspapers ran the headline Jedan je Hase!
Ferhatović played once for the Yugoslavia national team, on 8 October 1961 against South Korea in a qualification match for the 1962 FIFA World Cup.
The Bosnian rock band Zabranjeno Pušenje wrote a song in honour of Ferhatović called Nedjelja kad je otišao Hase ("The Sunday When Hase Left") and was included in their 1985 album Dok čekaš sabah sa šejtanom.