Celtic keeper Artur Boruc was at home in Poland on Monday mourning the death of his father. The goalkeeper, whose father is thought to have been ill for some time, was given compassionate leave to be with his family following the news, reports BBC Sport.
The 30 year old missed his team's match with Hibernian at the weekend after flying back to his homeland on Friday.
Caretaker manager Neil Lennon said: "He came in on Friday and said he was going back and we totally respected that.
"He came back from Poland on Wednesday and said his father was pretty ill," said Lennon, who had Lukasz Zaluska back in goal for Sunday's 1-0 win.
"There was a thought in the back of my mind of could he hang on and play, but obviously family comes first and the whole club and the support send condolences to him and his family.
"It is a tough time for him."