Career
Franjic joined the Melbourne Knights Football Club under 21 squad in 2009 after spending a number of years with the Victorian Institute of Sport. That year, he made his breakthrough into senior football, making six appearances for the first team in the Victorian Premier League in the first half of the season. He was then picked up by A-League side Melbourne Victory Football Club, initially with the youth team
On 10 May 2010, he was signed to a two-year professional contract with Victory.
On 9 January 2013, it was announced that Petar Franjic was released by mutual termination by Melbourne Victory to seek first team, playing opportunities. In his three seasons with the Victory, Franjic made 31 appearances in the league.
After short stints with Victorian sides Richmond South Carolina and Hume City Football Club, in August 2014, Franjic moved to Uzbek League side Olmaliq. The Uzbeq adventure didn"t last long for Franjic, who returned to Australia after making just three league appearances.
Upon his return to Australia, Franjic once more signed for Hume City Football Club.