Roy Keane's participation in Thursday's international game against Romania was thrown into renewed doubt last night when it was revealed that the Manchester United midfielder will stay on at his club's training base until at least this morning in order to receive further treatment to thigh and knee injuries.

The 32-year-old picked up a dead leg towards the end of Saturday's cup final win over Millwall in Cardiff but seemed decidedly upbeat regarding the international game immediately afterwards when he told reporters that he would be travelling to Dublin on the Monday before the game.

Brian Kerr said yesterday that Keane "will receive further treatment in the morning before a decision can be made on his fitness for the game". The Ireland manager gave no indication as to whether he believes the Corkman will travel.

Keane had been widely expected to make an appearance for this game in order to deal with the considerable media and public interest that will inevitably accompany his return to the international fold after a two-year absence. The midfielder may still arrive in Dublin over the course of the next 48 hours but the chances of him earning his 59th international cap before the summer have again receded.

Gary Breen, meanwhile, is definitely out of Thursday's game with the Sunderland central defender, as anticipated, falling prey to the knee injury that he had hinted last week might prompt his withdrawal.

The player was pulled out of the squad by his club because of "a serious knee ligament injury that he sustained in November," said Kerr in a statement issued through the association. The club had acted, he continued, "as they feel there would be a danger of doing further damage to the injury which failed to respond fully to rehabilitative treatment".

In addition to the central defender there are doubts about the availability of Jason McAteer, who was released by Sunderland last week and has since been linked with a move to West Brom. The midfielder, whose season was severely disrupted by injury, is said to be suffering from a groin strain and a decision on his fitness will probably be made today.

Similarly, Kerr will have to decide on whether Liam Miller or John O'Shea are in any shape to feature in this week's game. O'Shea arrived in Dublin yesterday but is reported to have picked up a knock to his ankle on Saturday and is considered a doubt.

Miller is expected to travel this morning but is apparently continuing to struggle with the groin problem that kept him out of the Celtic side for several months.