Munster will be without out-half Ben Healy for Saturday's Heineken Champions Cup clash against Clermont.
The 21-year-old had a MRI scan on his shoulder yesterday following Sunday's win over Harlequins at Thomond Park and will now start rehab.
Healy came on as a replacement for JJ Hanrahan in the 60th minute of the 21-7 win and shipped a couple of heavy challenges.
Speaking after the match, head coach Johann van Graan said: "We're very worried about Ben, he took two late hits there.
"We're going to get him checked out now. It was quite clearly a tactic from the opposition to hit him late and certain things in the game are just unacceptable. He's now got injured because of that."
Munster added that Matt Gallagher underwent successful surgery last week and will now undergo rehabilitation, while Jeremy Loughman (shoulder) and Niall Scannell (neck) have returned to full team training and are available for selection.
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