Ireland “hope” Mack Hansen and Finlay Bealham will be fit to play Scotland in the Six Nations at Murrayfield on Sunday.
The Connacht duo both picked up knocks in the opening round win over England in Dublin last weekend.
Winger Hansen, 26, left the field in the first half as a blood substitution, though did return to finish the victory.
Tight-head prop Bealham, 33, suffered what the Irish Rugby Football Union (IRFU) described as a leg injury in the second half and was replaced for the final 21 minutes by Tom Clarkson.
Ireland are already short of options for the number three jersey, with Tadhg Furlong still struggling with a calf issue and Tom O’Toole serving the last match of a six-game ban this weekend.
The IRFU said that Furlong and lock Joe McCarthy, who missed out against England through concussion, have “both stepped up their rehabilitation programmes” but that a decision on their availability will not be made until later in the week.
Munster forward Thomas Ahern and Connacht back Shayne Bolton have been added to the squad this week, bringing the total number of players in Simon Easterby’s panel to 39.
Ireland’s interim head coach will name his side to face Scotland on Friday.
