article_snippet: Klaas-Jan Huntelaar picked up knocks in Saturday's 3-1 Bundesliga win at home to Hoffenheim along with midfielder Marco Hoeger and forward Eric Maxim Choupo-Moting. '
article_snippet: Klaas-Jan Huntelaar (centre) is an injury doubt for Schalke game at Real Madrid .
article_snippet: Schalke Eric Maxim Choupo-Moting picked up a knock in Schalke's win over Hoffenheim .
highlights_snippet: Klaas-Jan Huntelaar and Benedikt Howedes among the concerns .