Schalke 04 defender Dennis Aogo could spend the rest of the season on the sidelines after he got injured during training on Friday.<br /><br />The 26 - year - old Germany international has had a scan and it has revealed the worse, that he has suffered knee ligament damage. <br /><br />Dennis Aogo, who is on a season - long loan from Hamburg, has been a regular for the Royal Blues until the injury setback.<br /><br />In the coming days, the German - Nigerian is expected to undergo an operation, and after that club medics will know the exact time he will be missing in action.<br /><br />Aogo has made 10 Bundesliga appearances this season.<br /><br />Photo Credit : uefa.com<br />