Rangers manager Steven Gerrard said Leon Balogun will be assessed after he was left dizzy in their 3-2 loss to St Mirren in a Scottish League Cup quarter-final fixture.
During a challenge with Jonathan Obika in the closing stages of Wednesday’s match, Balogun took a blow to his head and he was replaced immediately in the 84th minute.
Tthe 32-year-old defender - who has played 16 matches this season - could not continue the match with the severity of the injury yet to be confirmed.
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While he awaits medical report about the Nigeria international, Gerrard hinted Sweden defender Filip Helander might be called upon to fill Balogun's place if he is not passed fit for Saturday’s Premiership encounter against Motherwell at Ibrox Stadium.