Borussia Dortmund boss Peter Stoger fears Chelsea loanee Michy Batshuayi has picked up a long-term injury in his side’s loss to Schalke on Sunday.

Belgium international Batshuayi was taken off on a stretcher late on in the Ruhr derby, having appeared to roll his ankle.

The 24-year-old’s season could be over while there will also be concern he could miss the World Cup as Roberto Martinez’s Red Devils begin their campaign in two months’ time.

“I didn’t think it looked like the kind of injury that he would be back from quickly,” Stoger said in quotes published on Dortmund’s official website.

“I hope, of course, that I’m mistaken. I can’t yet say anything specific, other than the fact that he’s in pain and will now be examined in more detail. Hopefully it’s not as bad as it looks.”

Batshuayi has scored nine times in 14 games since joining Dortmund on loan in the winter transfer window in a deal that runs out at the end of this campaign.

For Belgium, who are in England’s World Cup group, Batshuayi appeared in half of his side’s qualifiers.