"I think this season is shaping up as one of the most exciting for the A-League," said Zullo.
"Personally, I think Harry and Brett Emerton coming back is fantastic for the league. Everyone should be really happy about it.
"They're going to add a whole heap to the league in terms of quality and off the field stuff as well. They're going to be great ambassadors."
He added: "I would like to think that most of the Socceroos would look to one day come back home.
"Obviously that's a long way away for me, but ideally I would still like to end up my career in Australia and end up where I started off.
"If the opportunity is there, I would hope that a lot of them would end up coming back home, and I think it's good for everyone involved."