Republic soccer boss Martin O'Neill will allow striker Robbie Keane to decide if he is fit to play today after two of his cousins were killed while working in a sewer.
Stephen Harris (34) lost his fight for life in Beaumont Hospital yesterday.
He was caught up in the same suspected methane gas incident which claimed the life of his brother Alan Harris, a father-of-two, on Wednesday.
The pair had been inspecting underground pipes on a housing estate in Portmarnock, Dublin.
O'Neill said Keane was feeling "quite down" following the second tragedy.
"He's not great, I must admit," he said.
"Obviously we feel for the family. He's quite down at the moment."
O'Neill said he hoped the striker would be emotionally fit to take some part in the Scotland match.
"I'm hoping that he'll come round and that if he feels that he wants to participate in the game it's entirely his decision," O'Neill said.
Ireland and Sunderland defender John O'Shea said Keane's teammates were offering support.
"It's very sad news and I'd echo the sentiments of the manager, our thoughts are with the family," the defender said.