Liverpool are waiting to discover the extent of the injury Thiago Alcantara suffered during Saturday's draw at Fulham.
The midfielder was forced from the field in the second half with an issue and will now undergo further assessment to determine the severity of it.
Jürgen Klopp was asked about Thiago's injury and the impact it would have on his midfield options during his post-match press conference at Craven Cottage.
The manager said: "I know what will now come up, it's clear. We said we don't need a midfielder because we have enough – and we actually have enough, but the problem now is we get punished for something that is not our responsibility really because things like this can happen.
"Nobody could imagine that Curtis gets the thing he gets; it is nothing serious but he is a young boy and it is a kind of stress reaction. Bodies are like this. Naby is only ill and he will now be back definitely next week again. Oxlade happened early and now with Thiago that is, of course, not good and we will see.
"Look, a transfer must make sense now and in the long term; we have midfielders, we have still enough midfielders. It is not that we lack midfielders, but it's just some of them are injured.
"This is not a good situation, I don't like it at all, but we have to see how we react on that – but for sure not panicking."