Thelo Aasgaard missed Rangers training today - making him a a huge doubt for tomorrow's clash with Panathinaikos.
Russell Martin's side take on the Greek cracks at Ibrox tomorrow evening, the first leg of their Champions League second round qualifier.
The squad took part in a training session this morning as they prepare for that huge clash, but new signing Aasgaard didn't take part.
It is a blow for Martin who is short of options in the attacking midfield/wing areas, which he has been trying to add options in.
Fellow new recruit Djeidi Gassama is not deemed ready for a start, meaning the likes of youngster Findlay Curtis and Oscar Cortes could compete for a spot.
Speaking on Saturday, Martin confirmed the Norwegian international was 'touch and go' for the first leg but should be ready for the second.
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He said: "It's disappointing for him and for us.
"He has been everything we thought we were getting and more. Since he has been in he has been incredible.
"His understanding, his athleticism, the power he has, the technical capability, he really is an exciting player for us.
"Unfortunately, it is a different level of intensity and it has been high demands in pre-season.
"He has picked up a little something so he is going to be touch and go.
"We hope he can be involved but if not then we are really hopeful he will be ready and raring to go for the second one."
Rangers triggered a relegation clause to sign Aasgaard from Luton and are understood to have paid an initial fee of £3.5million. Add-ons could take the deal to £5m.