Length of absence
Gilberto did not travel with the Arsenal squad to Norway for tomorrow's UEFA Champions League match against Rosenborg BK and manager Arsène Wenger said: "We don't know how long for but it will be at least one month without any physical effort."
If Gilberto's absence is for a month, he will also miss the visit to Panathinaikos FC on 20 October. Wenger added: "
It is a strange injury and an injury which usually concerns young players. I don't know if it is a recurrence of an injury he had when he was young. It could be a small fracture in one of his vertebrae."
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