Vidosic and Brazilian striker Danilo Neco have been let go by the K-League Challenge club who are currently fifth following relegation from the top flight last season.

The 30-year-old, who got married in November, may opt for an Australian return, after previous A-League stints with Western Sydney Wanderers, Adelaide United and Brisbane Roar.

The 23-time Socceroo spent six months in China with Liaoning Whowin before his move to Korea in February.

Vidosic only managed four starts in seven league appearances with Seongnam and has been allowed to depart.

Seongnam are seven-time Korean champions and two-time Asian champions but their fortunes have dipped in recent times.

Brisbane-raised Vidosic is the son of newly appointed Wellington Phoenix assistant coach Rado.