How long should I wait to use a power trained player after power train?

[cookizzz]

Did you give the new player cookies to boost his adaptation?

No. If I have any cookie, I will use them to boost my morale.

In fact, I don't know if players really need time to adapt. But I need time to test what role the player can play in my team. So I will not conclude whether new player is useful after he only plays a few matches.

[Tactician]

No. If I have any cookie, I will use them to boost my morale.

In fact, I don't know if players really need time to adapt. But I need time to test what role the player can play in my team. So I will not conclude whether new player is useful after he only plays a few matches.

I have noticed that some players have immediate impact (rating 8 and above) on their competition debut with their new club without playing any friendlies, while others players have a rating of 7. Some of the players who had a 7 on their debut do improve after a few matches.

[cookizzz]

I have noticed that some players have immediate impact (rating 8 and above) on their competition debut with their new club without playing any friendlies, while others players have a rating of 7. Some of the players who had a 7 on their debut do improve after a few matches.

I agree. New players may or may not have immediate impact. So my tendency to use new players slowly is just a personal preference. I do not follow it strictly.

For the original question about training, I never let my player stop training. I just checked the training results of a few new players. I don't notice that their training progresses are particularly fast or slow on joining new team.