Spain are likely to be without Spain attacker Iker Muniain for their opening match of the Olympics against Japan tomorrow afternoon.

The Athletic Bilbao player is reportedly struggling with a thigh injury that has restricted his ability to train over the past couple of days.

Team doctor Jorge Guillen has since sent the 19-year-old for a scan, the results of which are expected later today.

Regardless of the outcome, reports in Spain have claimed that Muniain will not be risked against the Japanese, with Sunday's match against Honduras considered a more likely possibility.