The Brazil attacker has picked up a knock and is unable to make the trip to the Serie A high-flyers, whilst Christian Abbiati also missed training
The Brazil international will undergo further tests in 10 days' time but is definitely ruled out of the game in the Italian capital against the team that currently sit third in the Serie A table.
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As well as Robinho, goalkeeper Christian Abbiati also missed Tuesday's training session with a chest infection, though this is less likely to see him miss the weekend's clash.