Arsenal defender Andre Santos has revealed that he expects to be out for three weeks following an ankle injury.
The Brazilian was stretchered off with the problem during the Gunners' 3-1 Champions League defeat at Olympiakos on Tuesday.
"I twisted my ankle in a silly move. The doctor thinks I'll be out for three weeks," said the 28-year-old.
Santos moved to the Emirates Stadium from Turkish side Fenerbahce for £6m over the summer.