article_snippet: The Arsenal forward has returned to London for treatment after sustaining a knee injury in England's win over Lithuania on Friday.
article_snippet: The news will come as a blow to Arsene Wenger ahead of the clash against Liverpool, which could prove pivotal in the race for a top-four finish and qualification for next season's Champions League.
highlights_snippet: The Arsenal forward is responding well to treatment at London Colney .
  
highlights_snippet: Arsenal host Liverpool in lunchtime kick-off at the Emirates on Saturday .