Vaclav Cerny will find it 'difficult' to stay at Rangers following his actions at Celtic Park on Sunday.
That's the viewpoint of former Czech Republic international Vladimir Smicer.
Cerny - who this morning admitted he would love to make his loan a permanent transfer from Wolfsburg this summer - is being probed by both Police Scotland and the Scottish FA after he sprayed water at Celtic fans close to the away dugout.
The incident occurred as he and the Rangers bench celebrated Hamza Igamane's winning goal on Sunday.
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Smicer believes that Cerny will need to be wary when walking around Glasgow city centre moving forward, and so, finds it tough to see a way that he can stay put at Rangers next season.
He told Sport: "He should keep his nerve. But it's sometimes difficult for players to keep their cool, not to react to the outbursts from the stands.
"In any case, Cerny will have to be careful when he goes to the centre of Glasgow, and it could be difficult for him to stay at his club."