The midfielder is working his way back to full match fitness.
Klopp said of Lallana: "Outstanding – to be honest, outstanding. I thought a few times it was over but he came back, he came back and he came back. Especially after 1-0 he played really good football, preparing the moments for the rest.
"If we would have had a little bit more freshness in the other positions he maybe could have used it. He was really enjoying the game – that was nice. The beginning was really strong and then of course a little bit average part of the game. But then he came back again. He is so important for us, it's really good news for all of us."