Also, the new players should compete with their senior in the same position there. If their senior showed better performance, a new player will be at the bench for a longer time.
It seems regeneration is the problem. Because every new player seems to need a process to be as good as a senior. But the target of victory seemed to get rid of a regeneration. But it all depends on the coach in deciding everything. I hope Anceloti can solve this problem. Sometimes the club just wants an achievement without seeing a process.