The answer is very simple.
We've been told that Juventus doesn't have the money to spend on signings, so overpaying for a player like Kolo Muani and making him the highest-paid player on the team is an unnecessary luxury.
Livepool has money, and overpaying for a player like Writz is a luxury they can afford...
As I said, my problem isn't Kolo Muani. I think he's a good player, but for the same price we're paying for Kolo, we could bring in two or three players to fill the necessary spots on the team.