Travelling Rangers fans paid an early visit to Red Star's Rajko Mitic Stadium and were appalled to see a section littered with broken seats and apparent burn marks.
The Ibrox side head to Belgrade to take on the Serbian champions, who returned to the top of their domestic league by beating Metalac on Monday night, in the Europa League last 16.
They carry a 3-0 lead from the first leg courtesy of goals from James Tavernier, Alfredo Morelos and Leon Balogun.