Black Stars defender Hans Adu Sarpei is one of three players suspended by German Bundisliga side Schalke O4 for poor training form.The rest are Jermaine Jones and midfielder Alexander Baumjohann.The three players have been banished to Schalke's reserves until December's winter break in the wake of the club's humiliating 5-0 defeat to Kaiserslautern on Saturday.Head Coach Felix Magath who announced the suspension has already made sweeping changes at Schalke by shortening his players' Christmas break to just six days and bringing the players in earlier for daily training.Source: Joy Sports/Ghana