Osieck named a 23-man squad to take on Oman later this month but was clearly unhappy at the dead zone between the end of the domestic season and the crucial World Cup qualifiers in June.

The German said he had been in talks with A-League boss Damien De Bohun about the competition’s scheduling but was unsure how much was being taken on board.

“(De Bohun) came to see me and wanted to get some input,” Osieck said about the scheduling, but added: “So far I haven’t seen any changes.”

Skipper Lucas Neill, who signed on with Sydney FC late in the season, is among a handful of A-League players who will be affected come the pointy end of the Socceroos World Cup qualifying campaign.

The A-League regular season concludes at the end of this month and the finals series three weeks later.

But the national team have vital clashes two months later against Japan away (June 4), Jordan (June 11) and Iraq (June 18) at home.

For the man in charge of masterminding the Aussies' third consecutive appearance at football’s showpiece event, it’s an unsatisfactory situation.

“My major concern is how do we fill the space between the end of the A-League and the upcoming qualifiers in June,” he said.

“The break in the A-League is way too long and it’s about time people really reconsider and restructure the A-League dates. Right now it is definitely not very acceptable.”

He also has no doubts about who should be playing second fiddle in a showdown between the A-League and the Socceroos.

“People have to learn that despite the importance of the A-League, football is an international game and the Socceroos combine the entire country,” he said.

“They have to be number one here and everything that is possible to accommodate the team, in order to make people happy, has to be done.

“I mean the A-League, in all fairness, it’s a club business, club interests, you have your supporters they follow your team but the Socceroos are followed by all Australians.”

Meanwhile, Osieck gave little cause to hope that Western Sydney Wanderers defender Nikolai Topor-Stanley will be back in the green and gold any time soon.

The centre-back has been immense for the league leaders in their inaugural season fuelling speculation he could be in line for a recall to the national team.

But the Socceroos tactician made it clear he has more experienced options available.

“Well he definitely did well for his home team,” he said. “As the entire team, they got their stuff together and they grew as a unit as the results and the performances indicated very clearly.

“However if you have a look at the (Socceroos squad) list there’s so many players  that already had been together with the Socceroos, had a number of caps, played a number of games and even played in international games so they definitely have the edge over Topor-Stanley.”