Guide: Understanding the 2016 Training System

[Toxcatl]

Second question, on next season when manager lvl up they will loss one start (20-25% I think), so they will be 22yo 6* (100-110% I guess)

It is 20%. And strictly speaking, players don't lose anything, the mechanics is different.

Here's one of my previous messages, just FYI:

There're two "quality measuring units" linked to each other: percentage and overall quality (OQ). Like, 104% (41). 1 point of OQ always equals 4%, just believe me.
And there's a threshold. It is set on OQ=0 for a 1st level manager and goes up by 5 every time she or he gets a promotion (5 on lvl 2, 10 on lvl 3, 15 on lvl 4, etc.).
For example, let's look on a player in a lvl 4 team with quality 104% (41). The threshold for lvl 4 is 15.
41 - 15 = 26
26 * 4% = 104%
On the next level he will be 84% (41), because the threshold will be 20. But the OQ stays the same, 41.