article_snippet: Arsene Wenger says Arsene Wenger expects Brazilian defender to be out for around three weeks with a hamstring injury .
article_snippet: The former Villarreal centre back was given a torrid time early on by Bobby Zamora as Bobby Zamora got used to the physical nature of the Premier League.
article_snippet: The former Villarreal centre back was given a torrid time by Bobby Zamora early on in the 2-1 victory .
highlights_snippet: Arsene Wenger says Brazilian defender could be out for 21 days .
  