Leinster winger Adam Byrne is set for "a number of months" on the sidelines after suffering a quad injury.
The one-time Irish international has been sidelines for more than a year due to a long-term hamstring injury, with his last appearance for the province coming in the latter stages of 2019.
26-year-old Adam Byrne had been in the final stages of his rehab process, when he aggravated the latest injury on which he had surgery last week, and could now potentially miss the rest of the season.
In more positive news for the province, both Jimmy O'Brien and Ciaran Frawley could be available again for this Sunday's PRO14 meeting with the Glasgow Warriors at the RDS, while Michael Bent is set to return having missed last week's win at the Dragons
"Both Rory O’Loughlin (shoulder) and Scott Penny (neck) came through the game against Dragons with no issues after returning from injury and both are expected to be available for selection this weekend.
"Michael Bent, who was named in the starting team to face Dragons last weekend but did not travel to Wales due to personal reasons, has fully recovered from his neck injury and is also expected to be available for selection.
"There was also positive news on Jimmy O’Brien who will return to training this week following a hamstring injury but he will require further assessment before a final decision is made on his availability.
"Similarly for Ciarán Frawley who requires further assessment this week on a minor shoulder injury before a final decision is made on his availability for the game against Glasgow.
"The only injury from the game against the Dragons is Scott Fardy who was withdrawn for a Head Injury Assessment late in the second half in Rodney Parade and will follow the Graduated Return to Play Protocols this week," their medical update reads.
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