Buccaneers will have seven of their 10-man Connacht contingent on deck now that the Connacht-Ulster warm-up has been cancelled for the visit of Lansdowne.
Coach Harry Williams will need the injured Leinster threesome of Liam Toland, Adam Magro and Matt Leek if Lansdowne are to spring a surprise.
UL-Bohemians are waiting on second rows Brian Dineen, Matt Porter and Brian Tuohy to recover from injury for their home tie with UCD, who themselves will have to get by without Niall Breslin and Louis Burke.
Shannon will still be short of Brian Buckley, a victim of pneumonia, for their trip to Carlow, who are waiting on slight injuries to Matthew Cooke, Pat Holden and Maurice Logue.
Clontarf should have club captain Warren O'Kelly back in the front row and either George Flynn or Colm Power will replace Ben Gissing at Lakelands Park.
Terenure's Peter O'Malley, Alan Ryan, Shane Cullen and Mark O'Kelly are all doubtful.