Martin O'Neill has confirmed Celtic striker Kasper Hogh is out with an injury while Callum McGregor is ill.
The manager has made three changes from the crushing defeat to LASK for today's league game against Falkirk, with the duo completely dropping out and Auston Trusty on the bench.
Liam Scales replaces the American defender, Alex Oxlade-Chamberlain is in midfield in place of McGregor and Haissem Hassan gets his first start on the wing, with Camilo Duran moving centrally.
O'Neill wasn't giving much away on Hogh's injury, saying it is something the club is managing.
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He said: "We've got seven games coming up in the next 22 days and it's about managing the injury [Kasper] has. We'll take it day by day. Callum [McGregor] is ill and Kasper [Hogh] is injured.
"[Haissem Hassan] has come in late to the fray. A lot of players who played at the World Cup are trying to make adjustments and coming in at the end of pre-season. It would have been nice if he was absolutely up to speed, but he starts the game.We've got seven games coming up in the next 22 days and it's about managing the injury [Kasper] has. We'll take it day by day.
"It was a devastating blow [on Tuesday] considering the position we were in. It has happened. We can't do anything about it now.This football club, there's times where a crisis seems to appear from nowhere. Maybe we might not have been equipped to have played in the Champions League. That aside, let's go out there, try to play and try to win the game.This will be difficult. John [McGlynn] is a fine manager. For us, just go and play - throw the shackles off."
