Borussia Dortmund will be short on defenders and firepower in front of goal when they travel to Eintracht Frankfurt on Saturday, with their title chances suffering a blow after top scorer Erling Haaland was ruled out for weeks.

The 20-year-old Norwegian will be sidelined with a muscle injury until January after he was surprisingly omitted from their squad in Wednesday’s Champions League 1-1 draw against Lazio.

Coach Lucien Favre later confirmed Haaland suffered a muscle injury in training and would return in January. He has netted 10 times in his eight league games this season and another six times in four Champions League matches.

Dortmund also saw centre back Mats Hummels being helped off the pitch late in Wednesday’s game after a knock on his ankle.

They were already without defenders Thomas Meunier and Emre Can ahead of Saturday.

“I just came from the hospital and it looks as if it is not too bad,” Hummels said late on Wednesday on social media.