Schalke just left named only right now with never get win after ten match played, last week lost from Leverkusen with 0-3 and bad result from the first Bundesliga starting until now, we know how many big player come from Schalke like Manuel Neuer, Julian Dexler and Mesut Oezil born to be star from Schalke, what happen if bad result get by Schalke every week and waiting time for Schalke play on second league and need more than two years get back to bundesliga.
True, Schalke had excellent youth development in the past. You have already mentioned a few names. Also to be mentioned are players like Leroy Sane, Leon Goretzka and Thilo Kehrer, all playing at big clubs in the Champions League. Unfortunately, Schalke just can't manage to keep such talents for several years and build a big team.