Danny Ings struck the only goal of the game in the second-half.
On Sadio Mane, Klopp told liverpoolfc.com, "I was quite satisfied. He had an exciting week or 10 days. He trained a lot in his break, did what he had to do and now he is here. He is a very, very nice guy and a good football player. Everybody could see in the first half, with really tired legs he really played a good game. He could have scored, could have done one or the other thing a little bit better, but he was fine."
Klopp was also asked about Loris Karius and Joel Matip.
"Loris is a good goalkeeper, there is no doubt about this. That's why we made the transfer! Joel Matip had a little surgery during the break – he had a screw in his ankle – so they had to take it out because it was an old injury. He got a little bit of an infection and he's only been two weeks in training. You could see in the first half he couldn't jump, which is actually one of his big strengths, so he lost one or two headed challenges.
"That's the moment, that's how pre-season is – you watch it and you say 'that's OK, that's not OK' and you work on it or ignore or whatever. Sadio was the most impressive player in the first half from the new players because he had really good moments and linked brilliantly with Roberto Firmino, so that was really good and everyone could see it. It's a good transfer. It looks like we have [made] a few good transfers."