The linked article leaves out some Amerikaner in the top level of the Bundesliga, although the comments to the article do mention a couple. Julian Green is with VfL Stuttgart who were promoted to 1st division this year. Tim Chandler usually starts at Eintracht Frankfurt. There is also an American youngster at Schalke, Weston McKennie. There is a bunch of Americans or dual citizens/US eligible playing in the 2nd Bundesliga. Youngster Haji Wright has been loaned from Schalke 04 to Sandhausen, Alfredo Morales is with Ingolstadt who were relegated from 1st. Jann George came up from 3rd division this year with Jahn Regensburg. Jerome Kiesewetter is at Düsseldorf, Andrew Wooten at Sandhausen, Terrence Boyd and McKinze Gaines play for Darmstadt. I don't know if these guys are real young but we have a Kenneth Kronholm at Holstein Kiel, Russell Carouse at Bochum and Mael Carboz with Duisburg (also a team that was promoted this year from the third Bundesliga). I did see Isaiah Young with Bremen's second team in the 3rd division but did not look any further.