Belgium have been dealt another setback ahead of their pivotal World Cup encounter with Iran, as star winger Jérémy Doku continues to battle a lingering respiratory illness.

The Manchester City forward remains unavailable after suffering a relapse of the infection that first emerged during Belgium's opening training sessions in Seattle, raising fresh concerns over his condition at a critical stage of the tournament.

Doku Misses Key Training Session

Although Doku travelled with the squad to Los Angeles ahead of Belgium's second Group B fixture, he was unable to participate in training on the eve of the match.

His absence has added another headache for head coach Rudi Garcia, who is already preparing for a difficult test against an Iranian side eager to boost their own qualification hopes.

Speaking to reporters, Garcia confirmed that the Belgian international is improving, but not quickly enough to be considered fully available.

"The situation is clearly getting better," Garcia explained.

"But Jérémy is still being affected by this respiratory issue. He hasn't been able to perform at his normal level since the symptoms first appeared."

Belgium Refuse to Take Risks

According to reports from within the Belgian camp, the medical team is determined to avoid rushing Doku back into action.

The 24-year-old is currently undergoing treatment, including a course of antibiotics, with the priority being a complete recovery rather than a quick return.

Belgium believe forcing the winger back too early could worsen the problem and potentially jeopardize the remainder of his tournament.

As a result, attention has already begun shifting toward next weekend's clash against New Zealand, a match many inside the squad hope Doku will be fit enough to start.

A Major Loss for Belgium's Attack

Doku's absence would be a significant blow for the Red Devils.

Known for his explosive pace, direct dribbling and ability to unlock compact defences, he is one of Belgium's most dangerous attacking weapons.

His ability to create one-on-one situations and stretch opposition backlines offers a dimension few players in the squad can replicate.

Without him, Garcia may be forced to alter his attacking approach against Iran, relying on different solutions to break down what is expected to be a disciplined and organized defence.

Focus Turns to Iran

Despite the concerns surrounding Doku, Belgium know their immediate focus must remain on securing a positive result.

A victory against Iran would place the Red Devils in a strong position heading into the final group-stage match and potentially move them one step closer to the knockout rounds.

For Garcia, the challenge is balancing short-term needs with long-term ambitions.

The temptation to rush a player of Doku's quality back into action is understandable.

But with the tournament entering its decisive phase, Belgium are choosing patience over risk.

And while Doku watches from the sidelines, the Red Devils must prove they have enough firepower to keep their World Cup journey on track.

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