<span class="st">Bayer Leverkusen's Sidney Sam has been called up by Germany manager </span><span class="notranslate">Joachim Loew for the trip to North America, where they are scheduled to play exhibition matches against USA and Ecuador. <br /><br />Sidney Sam, 25, has caps for the youth teams of Germany but had earlier pledged his international future to Nigeria.<br /><br />What was remaining for the winger to make his debut for the African champions was paper work, which the Nigeria Football Federation had started processing.<br /><br />Also named by Loew in his 23 - man squad to USA is Hamburg's Dennis Aogo, who has Nigerian blood flowing in his veins.<br /><br />Germany are ranked second in the latest Fifa World Ranking. Including friendlies, they have not lost their last 8 matches.<br /><br />Photo Credit: uefa.com<br /></span>