Schalke are set to be without injured striker Klaas-Jan Huntelaar for a crucial run of fixtures at home and abroad.
The Holland international is facing up to several weeks on the sidelines after suffering knee ligament damage.
Huntelaar picked up the knock after colliding with his own goalkeeper during a 2-1 victory over Borussia Dortmund on Saturday.
Having found himself back among the goals against the reigning Bundesliga champions, a spell on the treatment table comes at a bad time for the forward.
Schalke will also be cursing their luck, as they prepare to enter a potentially pivotal run of games.
They are pushing hard for a top-three finish domestically and face Galatasaray on Tuesday in the second leg of a UEFA Champions League last-16 encounter which is locked at 1-1.
Huntelaar's absence will be keenly felt in crunch clashes, but Schalke can console themselves in the knowledge that he will not require surgery.
Club captain Benedikt Howedes told Westdeutsche Allgemeine Zeitung: "Klaas-Jan Huntelaar is going to be out due to injury. Fortunately he will not need to undergo surgery.
"We as a team hope to see Huntelaar recover quickly and we hope to have him back soon."