After you choose the young players they will immediately start to be trained by the Youth Coach in order to be prepared to join your squad in the next season. This means that the Youth Coach is there by default. However, for those Managers who are truly committed to train the next big stars - the game offers the option of assigning additional Coaches with different areas of improvement. You can see what would be the player’s OVR (Overall Quality) after hiring each coach when you check out the light green animation on a player’s stars.