Jürgen Klopp is unsure of the extent of the hamstring injury James Milner sustained against Manchester City.

The midfielder was forced off during the first half of Liverpool's 0-0 draw with City at Anfield on Sunday.

Speaking post-match, Klopp confirmed Milner has a hamstring issue, but the No.7 needs to be assessed before its seriousness is known.

"How much [serious]? It's too early, I don't know," said the manager.

"I asked him 'big one?' and he said 'I don't think so, but big enough that I go off.'"

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