Arsenal captain Patrick Vieira is a doubt for the Champions League first knockout round first leg match against Celta Vigo in Spain on Tuesday after injuring a knee in Saturday's 2-1 win at Chelsea.
The France midfielder was caught by a late challenge from Chelsea's John Terry after 67
minutes. It was the same knee that forced him to miss last season's title run-in.
"He has ice on his knee, it's his bad knee so we will see how he is in the morning," manager Arsene Wenger told reporters.
Vieira completed the 90 minutes against Chelsea and scored his team's equaliser.