Rangers face a double injury blow with Ryan Jack and Kemar Roofe both ruled out of crucial festive fixtures.
Jack was expected to feature against Lyon in last week's Europa League clash but was missing from the squad entirely with manager Giovanni van Bronckhorst admitting there had been a small setback in his recovery.
He hasn't started a game since February while Roofe was ruled out for the visit to Hearts on Sunday.
Both will be missing for games in December and in Jack's case the midfielder will not return until after the winter break.
Van Bronckhorst said: "Kemar (Roofe) has a setback and will hopefully return before the winter break.
"Ryan (Jack) we hope to have him back fully fit after the winter break. No fresh injuries from the match on Sunday."
The manager is also excited to face Borussia Dortmund in the Europa League play-off in February.
Former Ibrox star Claudio Reyna's son, Gio, was named after the boss and he'll come face to face with the American teen after being paired in Monday's draw.
He added: "For me, it is an exciting Europa League draw for the club, against a top side in Europe.
"A quality opponent and it is a hard draw, but we want these challenges in football to compete with the best.
"Gio (Reyna) sent a text to my son as they are about the same age, it was great to be drawn against Reyna.
"I've known him his full life and visited him a year and a half ago to watch a game. I am very good friends with Claudio (Reyna) and hope he can attend the games."
