The 27-year-old has struggled for gametime and goals since leaving Melbourne Heart in 2012 and bounced between Europe and the A-League, with spells at Red Star Belgrade, Adelaide United, AZ Alkmaar and PEC Zwolle.
But the twice-capped striker who debuted at 18 and scored 11 goals in 35 games during his first spell with Heart – but only three in the seven years since –  is excited for the new challenge in Brisbane.
“I’ve really enjoyed training with the group. Everyone has been welcoming and I’m looking forward to contributing to the team,” Babalj said.
“I’m looking forward to playing back in my home country, in a league I know well and playing for the Brisbane Roar.”
After a successful trial, interim xoach Darren Davies said he was pleased to have added Babalj’s quality to his squad.
“Eli has been impressive on the training pitch since arriving in Brisbane and has fitted in very well with the playing group,” Davies said.
“We’re looking forward to adding his experience and skill to an already extremely talented attack we have at this club."