2 0 0 4 – 0 5 ▁season ▁making ▁ 1 8 ▁appearances ▁in ▁all ▁compet itions . ▁ ▁In ▁the ▁ 2 0 0 5 – 0 6 ▁season , ▁Wolf ▁recovered ▁from ▁injury ▁and ▁found ▁himself ▁compet ing ▁over ▁a ▁centre – back ▁position ▁with ▁Thomas ▁Paul us ▁and ▁Bart osz ▁Bos ack i . ▁After ▁featuring ▁in ▁three ▁matches ▁since ▁his ▁return ▁in ▁September , ▁he ▁suffered ▁an ▁injury ▁that ▁kept ▁him ▁out ▁for ▁a ▁month . ▁Following ▁his ▁recovery ▁from ▁injury , ▁he ▁returned ▁to ▁the ▁first ▁team , ▁but ▁was ▁pl ag ued ▁with ▁another ▁injury . ▁Wolf ▁again ▁returned ▁to ▁the ▁first ▁team ▁and ▁finished ▁the ▁season ▁making ▁ 2 2 ▁appearance ▁in ▁all ▁compet itions . ▁During ▁the ▁season , ▁he ▁signed ▁a ▁contract ▁extension ▁with ▁the ▁club , ▁keeping ▁him ▁until ▁ 2 0 0 9 . ▁ ▁With ▁the ▁start ▁of ▁the ▁ 2 0 0 6 – 0 7 ▁season , ▁Wolf ▁was ▁back ▁in ▁the ▁starting ▁line - up ▁alongside ▁fellow ▁centre - back ▁Gl á uber . ▁He ▁started ▁the ▁season ▁well ▁and ▁helped ▁the ▁club ▁go ▁und efe ated ▁in ▁the ▁first ▁nine ▁matches ▁of ▁the ▁season ▁before ▁losing ▁ 2 – 1 ▁against ▁Her tha ▁BC ▁on ▁ 4 ▁November ▁ 2 0 0 6 , ▁in ▁which ▁he ▁was ▁susp ended ▁after ▁pick ing ▁five ▁yellow ▁cards ▁this ▁season . ▁Wolf ' s ▁performance ▁continued ▁to ▁impress , ▁resulting ▁him ▁to ▁sign ▁a ▁contract ▁extension ▁keeping ▁him ▁until