What happened: Takehiro Tomiyasu, returning to the Japan national team, did not board the scheduled flight for a condition assessment. He collapsed and was substituted off at the 73rd minute during his recent Feyenoord match. The incident has raised immediate fitness concerns ahead of international duty.

Why it matters: Tomiyasu is a vital versatile defender for Japan, whose depth in defense could suffer in upcoming AFC World Cup qualifiers. His history of recurring injuries adds uncertainty to both club and international commitments.

What to watch: Monitor Japan FA and Arsenal for medical update; watch if Tomiyasu joins camp late or if backups like Ito or Taniguchi step up.