Nottingham Forest failed to bring the former Tottenham Hotspur defender back to the City Ground from Hull City.
The Stoke City loanee has been dropped to the reserves.
The German is heading back to the Bundesliga.
Stoke's German defender Philipp Wollscheid is wanted back in his homeland, a report claims.
Stoke City assistant manager Mark Bowen says that defenders are being pulled out of training sessions to limit injuries at the back.
Stoke City have struggled defensively without Ryan Shawcross.
Stoke City defeated Aston Villa 2-1 on Saturday but what did fans think of Philipp Wollscheid's contribution?
Stoke City lost 4-1 to Blackburn Rovers in the fifth round of the FA Cup, but what did supporters think of Philipp Wollscheid's contribution?
Stoke City new boy Philipp Wollscheid is still coming terms to with life in the Premier League.
Stoke City lost 3-0 to Arsenal on Sunday but how did the Potters' debutant get on?