Dunne joins squad to face Canada as four defenders pull out injured
O’Brien is out with ankle ligament damage, while a knee injury has ruled out Breen and Finnan was forced out with medial knee ligament damage.
Defender Dunne was left out of the original squad but recently regained his first team place at Manchester City after recovering from an ankle injury. Kenny Cunningham (Birmingham City) and John O’Shea (Manchester United) are his only rivals for a centre back berth.