Jordan Jones could be set for an extended spell on the sidelines after leaving Ibrox on crutches.
The winger is already due to miss matches after being sent off by Bobby Madden for a horror tackle on Celtic debutant Moritz Bauer.
But he was pictured leaving Ibrox with his knee in a brace and on crutches following the 2-0 defeat.
Rangers boss Steven Gerrard was heavily critical of the Northern Irishman for his tackle as he accused him of trying to appease the home support.
He said: "Oh yeah without a shadow of a doubt he got that one bang on. It was a red card.
"I think Jordan has been trying to appease the fans but that’s not how you appease Rangers fans.
"You create goals and you score goals if you’re a wide man. That’s how you get fans on your side, not kicking people when the ball is 10 yards away. He deserves the red card and he deserves his ban and he’s got everything to do now to get back in my team."
Jones has made 10 appearances for Rangers since moving from Kilmarnock in the summer.
He set up Alfredo Morelos' winner in Thursday night's win over Legia Warsaw but is yet to score himself.
