The Reds defender said to reporters: "I said to him [Slot] that I would like to be the defender that no one wants to come up against in Europe. We agreed that he will be harsh on me. If any time an attacker gets by me and gets past me, he will call it out in meetings, and individual meetings, and say this cannot happen.
"We go through every game together and he highlights where he wants me to improve. Even after the Milan game, we had about 20 clips going through what I could have done better and the good parts as well."
He added: "It is really refreshing to have a manager who will help and guide and teach me how to be better as a player. I am someone who wants to learn, someone who wants to be the best and someone who strives to be the best ever."