A big part of it is the level of the player when they leave, Ashley Cole was still amazing when he left. Havertz was hated, Luiz, Cech, Giroud, etc were all aging and didnt have much more to give to Chelsea

I dont think any of them are WC yet, but to me thats an issue of their age and experience. Saka is probably the closest to WC than all of them, then i would put Rice and Saliba after him. Odegaard needs to find consistency in his form. Martinelli needs to improve in more than a few areas, but he’s not far away from the conversation.