Sean O’Brien could miss Ireland’s tour to South Africa this Summer.
The back row pulled up in training with Leinster as he bids to recover from a hamstring injury.
The Tullow man is out of this Fridays Pro 12 semi final against Ulster.
Ireland will depart for South Africa in the next few weeks ahead of their three test tour to play the Springboks.
Fixtures
South Africa v IRELAND
DHL Newlands, Cape Town
Saturday, June 11, 2016
South Africa v IRELAND
Emirates Airline Park, Johannesburg
Saturday, June 18, 2016
South Africa v IRELAND
Nelson Mandela Bay Stadium, Port Elizabeth
Saturday, June 25, 2016