The midfielder is taking part in training this morning, having sustained a shin injury.
Denise O'Sullivan could yet feature for the Republic of Ireland in Thursday's World Cup opener against Australia.
The midfielder is taking part in training this morning, having sustained a shin injury in last Friday's friendly against Colombia.
Ireland boss Vera Pauw says he has 'good hopes' O'Sullivan will play a part later this week, but that it's still too early to give a definitive answer.