James Milner sustained a hamstring injury during Liverpool's 3-1 defeat by Leicester City.
The vice-captain was forced off in the early stages of Saturday's Premier League game at King Power Stadium.
Jürgen Klopp told the BBC: "Hamstring, I think. That's what he said. He felt only a little bit but he didn't want to take the risk, we didn't want to take the risk, so we took him off.
"We'll see how it develops, but yeah, hamstring."