I don't understand the concern re Kerkez. He's a 21 year old kid, and for anyone that watched a bit of football bar Liverpool last season could see that he was already then among the top left backs in the league. He's got everything to be a top player so just give him a bit of time to settle in. Thought he was more than enough solid last night anyway.
Needs to do better for the first goal but he'll learn.
Should 100% start against Arsenal.
Same with Wirtz. More than enough solid last night as well, but not easy to make your mark on a game that is less about tactics but more just a fight. Still finished with the highest pass percentage of everyone on the pitch but to little creativity in that hostile environment. Just happy we didnt get any injuries.
Both will be much better in the coming weeks as they settle in. Patience, and no need to overreact on either of them.
We're trying to retain a title. We can't just start players because they have promise. Kerkez actually has to earn his place - he has to be competent in the here and now. Apart from anything else it's bad for squad morale if some players are just given a pass.