If you have a great player who doesn't fit with your
HEAD COACH’s
PLAY STYLE then you can use this item to retrain him.
To use a
RETRAIN item tap the
[+] icon in the
ACTION column in the
SQUAD screen.
The following play style retrain items can be found in packs:

RETRAIN PLAY STYLE TO ATTACKING

RETRAIN PLAY STYLE TO DEFENSIVE

RETRAIN PLAY STYLE TO BALANCED

RETRAIN PLAY STYLE TO ALL