 Following stints with Borussia Mönchengladbach, Nürnberg, Energie Cottbus, FSV Frankfurt and Kickers Emden in the top three divisions in Germany, Aidoo ended up playing in the lower leagues with 1.FC Viersen and Rheydter SV from age 28 onwards.Aidoo made his debut for the Ghana national football team in a friendly against Tunisia on 27 March 2003, and appeared in two African Nations Cup qualifying matches later that year.