Eire and Leinster centre Robbie Henshaw shall be out of motion till January after having wrist surgical procedure.
Leinster coach Leo Cullen mentioned on Monday that Henshaw, 29, “underwent a process” final week.
Henshaw will miss the opening rounds of the European Champions Cup and three interprovincial derbies within the United Rugby Championship.
Johnny Sexton is a doubt for Leinster’s sport in opposition to Ulster on Saturday due to a calf damage.
Sexton, 37, sustained the damage within the warm-up earlier than Eire’s closing autumn worldwide in opposition to Australia on 19 November and was a late withdrawal from that sport.
Henshaw’s involvement in Eire’s autumn video games was confined to the opening 5 minutes of the win over Fiji on 12 November, when he had to get replaced due to a hamstring damage.
The previous Connacht participant’s absence opened the door to Ulster’s Stuart McCloskey, who began all three November video games for Andy Farrell’s Eire facet.
Former All Blacks centre Charlie Ngatai can be a doubt for Leinster’s Ulster sport on the RDS after sustaining a shoulder damage in Saturday’s win over Glasgow.
Eire backs James Lowe and Jordan Larmour may very well be in rivalry to characteristic this weekend after returning to Leinster coaching.
Each missed Eire’s autumn marketing campaign with wing Lowe not having performed this season due to a calf damage and Larmour out since early October due to a foot drawback.