Jawai, a former player for the Cairns Taipans in the National Basketball League, had just finished his second season in the American NBA.
At Partizan Jawai will replace fellow countryman and Australian Boomers World Championship team member Aleks Maric, who recently signed with Greek superpower club Panathinaikos.
BC Partizan are Serbia’s best team, and have won nine consecutive national titles.
Jawai played 39 games for the Minnesota Timberwolves in season 2009/10, averaging 3.2 points and 2.7 rebounds per game. He played six games for the Toronto Raptors in the 2008/09 season.
He also has appeared in the NBA Development League for Idaho Stampede and Sioux Falls Skyforce.
Jawai was originally drafted 41st overall by the Indiana Pacers in 2008, but was immediately dealt to the Toronto Raptors.
One year later, Jawai was traded again to Dallas in a four-team deal involving the Mavericks, Memphis Grizzlies, Toronto Raptors and Orlando Magic. A few months later Jawai, who never appeared in a game for Dallas, was traded to the Minnesota Timberwolves.