Rangers could be left to face Erling Haaland after all as the striker made a surprise return to Borussia Dortmund training ahead of Thursday's match.
The Premiership champions are in Germany for the Europa League play-off first leg as they face one of the continent's true giants.
Prolific striker Haaland is among the most feared strikers in Europe and has hit 23 goals in 20 games for Dortmund so far this season.