While each team is allowed two marquee players outside the cap, set at $2.5 million, Arnold suggests for the good of the national team Football Federation Australia should consider making exceptions for Socceroos who aren't getting the desired minutes overseas.

Melbourne Victory came to the rescue of Socceroos playmaker Tom Rogic, who struggled to get a game at his Scottish club Celtic in the lead-up to this year's World Cup, and Arnold feels the salary cap shouldn't stand in the way of A-League clubs who want to make similar loan deals.

"FFA need to look at something to help Australian players who overseas aren't getting games if they want to come home in a loan deal situation," Arnold said.

"The salary cap makes it hard. Yeah, you've got two marquees but if there's special players ... players who go overseas and if it doesn't work out hopefully we can find a way with special compensation. Whether it's one player per club, it can be outside the salary cap to help those players' careers and strengthen our national team.

"With the salary cap system they don't have the option to come home and they get frozen out of football."

Meanwhile, Arnold is gearing up for his first match at the Sydney helm with his side to take on NSW state league club Macarthur Rams in a pre-season game on Tuesday.

Pre-season training will further intensify next week when Sydney travels to New Zealand to clash with English Premier League clubs West Ham United and Newcastle United later this month as part of the Football United tour which also includes A-League clubs Wellington Phoenix.

Having signed the likes of Bernie Ibini, Shane Smeltz and most recently Alex Brosque in the off-season Arnold is keen to see how his newly assembled side performs before departing for New Zealand.

"I know the Rams will be fired up for the game," he said.

"It will be my first look at our squad against another team and will give me some food for thought ahead of our trip to New Zealand."