JEFF Hendrick is out of the Republic of Ireland's World Cup qualifying showdown with Serbia after failing to shake off a thigh injury.

The 25-year-old Burnley midfielder was sent for a scan on Monday morning after complaining of still feeling discomfort as he tried to make himself available for Tuesday evening's game at the Aviva Stadium after sitting out the 1-1 draw in Georgia on Saturday.

However, he and manager Martin O'Neill have had to admit defeat and Hendrick will play no part in the Group D fixture.

O'Neill said: "He did some work with the medical team [on Sunday] and no, he's still feeling it a little bit going completely full out, so he will miss out."

Hendrick missed Burnley's 1-1 draw with Tottenham at Wembley with the problem and now faces a race against time to be fit for Sunday's Premier League clash with Crystal Palace at Turf Moor.