▁In ▁ 2 0 0 9 , ▁he ▁moved ▁to ▁K ess ben ▁where ▁he ▁played ▁in ▁the ▁Glo ▁Premier ▁League . ▁K ess ben ' s ▁playing ▁license ▁was ▁bought ▁by ▁T ark wa - based ▁M ede ama ▁SC ▁in ▁December ▁ 2 0 1 0 , ▁and ▁O w us u ' s ▁rights ▁were ▁transferred ▁to ▁the ▁new ▁club . ▁ ▁Following ▁an ▁un success ful ▁trial ▁with ▁Polish ▁side ▁Leg ia ▁Warszawa , ▁O w us u ▁moved ▁to ▁the ▁United ▁States ▁in ▁ 2 0 1 1 , ▁signing ▁a ▁one - year ▁contract ▁with ▁Ch ivas ▁USA ▁of ▁Major ▁League ▁Soccer . ▁He ▁made ▁his ▁debut ▁for ▁Ch ivas ▁on ▁March ▁ 2 9 , ▁ 2 0 1 1 , ▁in ▁a ▁L amar ▁H unt ▁US ▁Open ▁Cup ▁game ▁against ▁the ▁Port land ▁Tim bers . ▁ ▁O w us u ▁was ▁released ▁by ▁Ch ivas ▁USA ▁in ▁late ▁June ▁ 2 0 1 1 ▁due ▁to ▁injury . ▁He ▁was ▁expected ▁back ▁by ▁Ch ivas ▁but ▁M ede ama ▁SC ▁did ▁not ▁release ▁him ▁. ▁ ▁International ▁O w us u ▁has ▁experience ▁of ▁various ▁youth ▁national ▁teams ▁in ▁Gh ana , ▁having ▁played ▁for ▁the ▁Black St ars ▁at ▁U - 1 7 ▁and ▁U - 2 1 ▁level , ▁and ▁being ▁a ▁member ▁of ▁several ▁cam ps ▁with ▁the ▁full ▁national ▁team . ▁He ▁was ▁named ▁in ▁a ▁Gh ana ▁squad ▁picked ▁for ▁a ▁ 2 0 1 2 ▁Africa ▁Cup