The Iranian national team has long been aware of Arzani's progress, with the Melbourne City youngster illuminating the A-League this season with sensational displays.

The highly-rated 18-year-old hasn't commited his future to either national side, admitting that the lure of a World Cup would prove enticing from either side, although more recently he said he was "leaning" more towards the Socceroos.

Nevertheless, without a cap to his name - and needing a competitive fixture to rule him out from switching nationalities - unless Bert van Marwijk takes Arzani to the World Cup, Australia seems more-and-more likely to lose him for ever.

"We follow with all the details all national team players," Queiroz told Foxsports Asia.

"And with the player you mentioned (Arzani) - we've been following him very closely, with full details of every single game.

"We have direct observations and analysis, and video analysis, of every single game of all national team players and he is part of our system.

"We've been watching very closely, we've been analysing all the games he's been playing. We have deep research and analysis on him, and all the other players.

"In the end, the decision will be made on the capabilities and skills and character of each player to be part of the national team."

The Portugese coach has been a brilliant long-term appointment for the Iranians, the former Manchester United assistant first assumed the role in 2011. But despite Queiroz' insistence on developing strong squad depth within Iran, he said he wouldn't cap Arzani purely to lock him into Iran.

"In my long experience with international football players, especially the players that have the possibility to choose which national team they can play. I never challenge one player to play with the national team that I’m working for if I’m not sure that he has the real possibility to have an impact on the success of the team," he said.

"It has happened with other Portuguese players that they call them to other national teams to stop them playing for Portugal, and I've always thought that was not a good move, not a correct and honest move.

"So I will never do that with other players, because I'll feel bad personally if I challenge a player to play for Iran, and after me or any coach stops coaching the team.

"This decision is very complex and it's a big decision and we can only take this decision if we are absolutely sure that this player will have a huge impact with the national team of Iran.

“I don’t want to go into full details because I don’t do that for any other player.

“But of course, it's obvious that if we are following him game after game it's because we recognise he's a player with good potential."