Garry Ringrose will not feature for Ireland in November after being ruled out by Leinster coach Leo Cullen until December.
The 22-year-old underwent shoulder surgery last July but has failed to recover in time.
“Garry is still a bit off so he is probably looking at the end of November,” said Cullen following victory over the Glasgow Warriors at Scotstoun where Leinster lost Josh van der Flier and Barry Daly to ankle injuries.
“It looks like Josh will struggle for this week,” said Cullen ahead of the Pro 14 match against Ulster in Belfast next Saturday.”
Ireland face South Africa on 11th November before facing Fiji on the 18th and Argentina on the 25th.