article_snippet.sent: The 27-year-old was taken off in the first half of both legs of their Champions League victory on penalties over Bayer Leverkusen in the German Cup last eight on Wednesday.
article_snippet.sent: The Morocco international said on his Twitter account that a medical examination suggested his would be out for between 'two and four weeks'.
article_snippet.sent: The was no official comment on the injury from Bayern, who travel to Porto next week before the return leg in Bayern Munich later this month.
article_snippet.sent: Bayern boss Pep Guardiola has a long injury list to contend with as Bayern boss Pep Guardiola aims for domestic and European glory .
article_snippet.sent: Franck Ribery, who has been out for weeks with an ankle injury, returned to training on Wednesday while Thiago Alcantara has only just returned to action after a year out injured.
article_snippet.sent: Bayern, 10 points clear at the top of the Bundesliga, are still in the hunt for three titles.
highlights_snippet.sent: Bayern Leverkusen will be out for between two and four weeks .
  
highlights_snippet.sent: Bayern Leverkusen face Porto in the Champions League on April 15 and April 21 .
  