Liverpool will learn the extent of Philippe Coutinho's injury today.
The Daily Star says he will be sent for a scan after suffering a suspected hamstring injury in Liverpool's 4-1 triumph at Manchester City.
"I hope we got there early enough," Jurgen Klopp said.
"It was a little bit of cramp. He felt something.
"I hope that's all it was because everybody can see that he's very important to us.
"He's in really good shape in this moment and I hope we could react early enough."