The doubtful Anderson could be replaced by Vadim Demidov at centre-back.
Manager Veh is unlikely to make any changes in midfield.
Karim Matmour should keep his spot up front, with Olivier Occean not in his best form.
Schalke regained confidence in the Champions League during the week, after two losses in their last three Bundesliga games. The team needs to create more chances for Klaas-Jan Huntelaar again.
Frankfurt are still third in the table after some difficult weeks and a win against Augsburg in their last home game has kept them ahead of Dortmund for now.
Expect this to be a close game. If Frankfurt are able to use their fitness advantage against a Schalke team that played in the Champions League during the week, they have a chance to get a result here.
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