Trainig ground and youth academy

Hi,
Does any of these 2 buildings (training ground and youthbacademy) have any effect of the actual players in the squad? Someone mentioned that the highes the youth academy is the better young players in the squad tend to train.

Any truth there?

Thanks!

I think its random for youths. I got a 24t youth last season & a 15t youth today. The 24t trains alot better.

ofc it's true, otherwise u wouldnt need to upgrade it