Arsenal"s Mikel Arteta says that Martin Ødegaard"s ankle injury will keep the captain out of play "for a while", as the team gear up for their Champions League opener against Atalanta. Ødegaard missed Sunday’s victory over Tottenham in the north London derby having sustained an injury during Norway"s win over Austria last week. "After everything was scanned, the scan showed he has got some damage, especially on one of the ligaments in the ankle," said Arteta. Martin Ødegaard facing lengthy break after sustaining ligament damage