It's not a must be. I just feel that, as for this year limited pool and trainer, it' better to be this way, but well, i did mention, saying it will still be very well up to the manager, we will discuss with the manager, know of how they feel on the player and his team. So it's like, discssion will still be done with manager, if they dont like this way, i'm fine with it, we as a management, no matter wht, we will still try to hlp the manager on the training of player if needed.
For example:
Due to limit potential, its like, asking a 'Allstar' to be a SF? he may be able to be a SF for u21 but it's not enough to be a SF to player for NT. so we are trying to maximize the skill to link up with the potential of the player.