Veteran Allan McGregor will be back in goal for Rangers after Jon McLaughlin picked up an injury before the Champions League visit by Napoli.
McLaughlin had replaced the 40-year-old as first choice this season, but he has suffered a setback just as he earned a recall to the Scotland squad.
Manager Giovanni van Bronckhorst backed McGregor in the absence of the 35-year-old whose performances faced scrutiny.
"I have every faith in him tomorrow with the experience he has," he said.
"Of course it is different for Allan, that he is not starting the games from the beginning, but he is still the same in training, he is still the same person and he will be fine tomorrow."
McLaughlin had received some criticism following back-to-back 4-0 defeats by Celtic in the Scottish Premiership and Ajax in the Champions League, picking up an injury in the Netherlands.
Now it will be McGregor who will face visitors who started their Group A campaign with a stunning 4-1 win over last season's runners-up, Liverpool, and followed that up with a 1-0 weekend defeat of Spezia to top Serie A and extend their unbeaten run this season to seven games.
The tie has been pushed back 24 hours until Wednesday due to concerns over police resources related to the Queen lying at rest in Edinburgh.
Rangers were denied the opportunity to get back to winning ways against Aberdeen when all Britain's weekend fixtures were postponed.
Alfredo Morelos would have hoped to use that game to prove he is on the comeback trail after being dropped for the Champions League qualifier against PSV Eindhoven amid concerns over his fitness and attitude.
However, Van Bronckhorst said: "Alfredo is in a good place mentally and physically, he is training really well and I have had a good conversation with him.
"He is in a far better place and makes it difficult for me to decide on my starting team."
Rangers captain James Tavernier has recovered from the knock that forced the right-back to be withdrawn at half-time against Ajax, while centre-half Ben Davies is pushing for a start after recovering from injury.
However, midfielder Tom Lawrence is likely to miss out again along with long-term absentees Ianis Hagi and Filip Helander.
Napoli are without Nigeria striker Victor Osimhen, who suffered a thigh injury in the win over Liverpool.
Mexico winger Hirving Lozano also misses out after picking up a knock following his weekend appearance as a substitute.
Rangers midfielder Steven Davis: "The group has been hurting, we have been working hard at training and it is important we respond. We are excited for the game and the intensity has been there at training.
"Napoli have had a great start to the season, but we know what we can achieve here in our home games with the crowd behind us. We know the last two results haven't been acceptable and the most important thing for us is to get back to doing the basics well."
More to follow.