Shane Long a major doubt for Euro 2016 play-offs after aggravating ankle injury
Republic of Ireland striker Shane Long is facing a race against time to be fit for Ireland's two-legged Euro 2016 play-off Bosnia Herzegovina next week.
Shane Long had closed in on a return after suffering ligament damage in the defeat to Poland, but suffered a minor reaction in Southampton training on Wednesday and will now miss their game with Sunderland at the Stadium of Light this weekend.
"Nobody is coming back," said Koeman.
"Shane and Jay (Rodriguez) are still out. Shane was close.
"He trained yesterday with the team but he's still not 100 per cent. He needs to be 100 per cent to be part of our squad and so he is not involved for the weekend.”
There was better news for Martin O'Neill as John O'Shea is in contention to return from injury for the Black Cats on Saturday.
Fabio Borini, Ola Toivonen, Younes Kaboul and O’Shea are all in contention for Saturday’s match.
The quartet missed the Black Cats' defeat at Everton due to injury but all four have since returned to training.
“The good news is Ola, Fabio, Younes and John all trained today,” said Sunderland boss Sam Allardyce. “With no reaction from their first training session back in the squad they will be available for selection on Saturday which is important.”