The Lions travelled to the Middle East on Tuesday without Hariss Harun, Safuwan Baharudin, Shakir Hamzah and Yasir Hanapi, all four not being allowed to travel because of their on-going National Service commitments.
While Safuwan, Shakir and Yasir are expected to join the squad after Singapore's friendly against Azerbaijan in Dubai on February 24, Hariss has definitely been ruled out of the clash against Berti Vogt's charges and, crucially, the Group A qualifier with Iraq in Qatar five days later.
Also absent for both games will be the injured LIONSXII pair of Izwan Mahbud and Juma'at Jantan, further trouble for Singapore Radojko Avramovic, who - not surprisingly - was far from happy with the disruption.
"There will now be more pressure on some players, because it looks as if several of them will have to play in both games," a disgruntled Avramovic told ESPNSTAR.com.
"We had been thinking that we could save the best for the Iraq match, but now, because of the absences, some players will have to play for 90 minutes against Azerbaijan.
"I just hope that this will not affect them too much and that there are no new injuries, because the Iraq match comes very quickly after the friendly with Azerbaijan," he added.
Despite the enforced absences, and the fact that Singapore are no longer in contention to qualify for the 2014 World Cup in Brazil, Avramovic was adamant that his side was looking to secure a win against Iraq in their final qualifier.
The Serb did, however, refute any suggestion that there was any element of revenge attached to the match following Iraq's 2-0 win in the reverse fixture last September.
"Of course we will go their for the win, we will try - why not? We have nothing to lose," Avramovic declared.
"There is no sense of revenge, because in the first game against Iraq, they took their opportunities, we didn't, and they won 2-0.
"We could have scored at least two goals in that game. Although we did not play badly, I thought Iraq thoroughly deserved to win.
"We will go there and try to score goals and get a positive result. The big question is though, can we stop them scoring?" Avramovic concluded.
LIONSXII ace Irwan Shah has been called up to replace the injured Juma'at, while Balestier Khalsa goalkeeper Joey Sim, who many thought would be dropped from the original 25-man squad, will now travel to the Middle East.