I don't think it's the job of the managers to contact you, you are doing the scouting (U21 scouting is not that bad, only 5 leagues to scout every season and it's all on the same page), you have an idea of the new players, you contact the managers.
Sorry but I'm 100% with zmtomako on that one.
And I don't know if it's the language barrier or the translation but you're the one coming off as toxic here.
"But don't tell me such things about training speed. You are completely wrong."
I've had this argument time and time again but somehow eastern European managers don't seem to believe it and keep saying it doesn't change anything, idk why!
If you want a short player to have good inside skills, you got to train that FIRST, when he's 18. Training speed of inside skills does decrease a lot when he's 21 and short (which is the case of the 2 players here). That is a well known and well proven fact, you will easily get 5-6 more pops total by the time he'll reach 21, but of course he will be slightly worse on the outside skills.
Same is true with big players, you got to train outside skills first.
But if you do that kind of training, the primaries won't be good enough for the U21, it's only a long-term plan for the NT. When the player potential is low there's not a whole lot of incentive to do that, you'll just end up with a OK backup SF