Klopp believes Karius' blunders in the final of the Champions League were down solely to concussion
The 25-year-old was at fault for two of Real Madrid‘s three goals in the Kiev defeat, rolling the ball straight to Karim Benzema’s foot and then allowing Gareth Bale’s drive to slip through his hands.
No-one realised the German was suffering from a knock he took to the head from Sergio Ramos – something which Klopp was only alerted to by Franz Beckenbauer days after the final.
But as Karius prepares to make his first appearance since the final in a friendly at Chester on Saturday, Klopp stressed it was business as usual.
“It’s all normal here. I don’t know exactly what people think or made of the situation. The only thing I can say is he had a concussion in the game,” he told liverpoolfc.tv.
“He didn’t feel it obviously. The guy who has it is the last one to be aware of it, probably.
“If you ask Loris, he says he didn’t think about it and didn’t use it for a second as an excuse.
“We don’t use it as an excuse, we use it as an explanation.
“So from my side everything is fine. We don’t think about that any more and we start completely new.
“He was influenced by that knock, that is 100 per cent. What the rest of the world is making of it, I don’t care.
“It’s really not important what the people say. We do not use it as an excuse.
“Now people could think for us it is the explanation – and for me it is 100 per cent the explanation and that’s all.”
The original collision with Ramos went virtually unnoticed and Karius’ concussion was not discovered until five days later, when the player went for assessments while on holiday in the United States.
It was a call from Beckenbauer, however, which alerted Klopp to the issue.
“He called me and said he came from a doctor, he told me: ‘Your goalkeeper had a concussion’. I said ‘What?’,” he added.
“I got all the pictures from different perspectives, saw it and thought: ‘How can we all think that the boy who didn’t show any weakness in that game until then made these big mistakes in a very important game and nobody thinks it’s because of the knock he got?’
“That was, for me, the explanation. I thought it was too late, you cannot check that but now I know a concussion isn’t coming and going in a day – if you have one, you see it days later.
“Five days after the final, Loris had 26 of 30 markers for a concussion still.”