"There's only one captain" chant shows the fans are with the club, not Icardi. Nainggolan, Politano also approved...
Vienna is the land of emperors and the latest proclamation is of last night, just a few minutes because 8:00 pm. At the end of the match, Samir Handanovic went to greet traveling fans at the guest area and they started chanting “there is only one captain.” Samir was very happy while next to him at the time was Nainggolan who enjoyed the moment by laughing a lot. Politano was also there, raising his hands and clapping to the rhythm of the chants.
It seems that the fans are sending loud and clear message: they are with the club, and not with Icardi.