well, your theory was right
I sent a ticket to support and they told me that.
The thing with my other player Petros (and 4-5 more I have in my team) is that he isn't 1* player.
Those are academy players I kept for some seasons and now their quality is less than a star (it's about -5* )
Case closed

* but I wonder why not to use p.t in players 30 y.o. or more
That's what I want him, for an older player I want to keep for few more seasons in high q .