Bayern Munich might be missing the services of wing - back David Alaba in their remaining Bundesliga fixtures plus the Champions League. <br /><br />The 22 - year - old sustained a knee injury in Austria<span class="&quot;body1&quot;">&rsquo;s 1 - 1 draw with Bosnia Herzegovina on Tuesday, and according to initial prognosis, he could be out of action for eight weeks.<br /><br />Reports in Austria suggest that the Austrian - Nigerian&nbsp; may have torn his cruciate ligament after </span>Bosnia defender Ermin Bikcaic fell on his knee.<br /><br />&ldquo;I am in a great, great deal of pain, can barely walk, and don<span class="&quot;body1&quot;">&rsquo;</span>t really know what<span class="&quot;body1&quot;">&rsquo;</span>s happening,&rdquo; Alaba was quoted as saying by Kronen Zeitung.<br /><br />Despite picking up a knee injury in November, Alaba has netted 5 times in 28 outings for Bayern Munich in all competitions this season.