“Ki-Jana is a wonderful kid and a sensational young player who can learn so much. Especially in the Napoli game when he came on, on the left side, it was maybe his best 15 minutes in the pre-season,” Klopp told LiverpoolFC.com.

“The boys try to adapt to what we ask them for; we don’t tell them too much because we want them young and fresh and open. Take the information from the training pitch because if I tell them something, they are like soldiers and it’s not the right thing.

“Information is not there to delete all the other information you had before and to start thinking what the boss wants. They are with us. They had all the development they did without me – and that’s why we let them go [early from the Evian training camp].

“You can from time to time, especially the physical demands were really heavy for him to take. You forget so quickly these boys are so young. He’s still 17, it’s just crazy. But everything will be fine, he’s a fantastic footballer and I’m really happy that we have him for longer.”