Rangers are seeking to secure a place in the third qualifying round of the Europa League by overcoming Progres Niederkorn.
The Gers hold a 2-0 advantage ahead of their return trip to Luxembourg, with goals from Joe Aribo and Sheyi Ojo putting Steven Gerrard’s side in a commanding position.
However, a missed penalty from James Tavernier means there is still doubt over their progress.
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Progres, who beat Cardiff Metropolitan University and Cork City to reach this stage, famously shocked the Glasgow side in the competition two years ago, and a repeat of the 2-0 success they enjoyed at home in 2017 would send this match to extra-time and penalties.