He has been linked with moves to China, Japan and Australia after declaring he would not move to another European side.
Although he was asked on Thursday, Iniesta gave no insight into where he will be playing next season.
The Spanish legend confirmed "all possibilities are open".
"I've made a decision regarding the place but there are still some details missing", he said.
The A-League most recently had a centralised "guest marquee" fund in 2016, but it attracted only one player, Tim Cahill, whose stint at Melbourne City did not pull in the crowds and boost TV ratings as hoped.
"It would require a significant investment, primarily from one of our clubs, but we've got some funds available as well and if we can contribute - it would be a contribution, not the bulk of what he could earn - then we think it's money well spent".
Giuliani Resigns From Law Firm Amid Tensions Over Comments About Trump
Of his formal resignation , Giuliani said, "This way, my sole concentration can be on this critically important matter for our country".
The club had tweeted before the game to say they were presenting Iniesta with the memento to "pay tribute to his career and his values as an athlete" as he prepares to leave Barca in the summer.
"They said I am not going to China, now they say Japan is an option, and I have also heard Australia".
"For me it would be a dream to be able to play again with Sevilla's shirt at the Sánchez Pizjuán", the 30-year-old said.
"In the next 10 days I will try to pick the best option at all levels for myself".
Regarding his own Barcelona future, the midfielder said: I've nearly come to the end of my commitments with Barcelona and it's true that I have various offers to think about and in the next week, 10 days, I'll try and decide which one is the best for me.
O'Rourke said if a move for Iniesta was unsuccessful, other targets would be drawn up.