If you lose because of him, don't play him this season only train hard to make him even better and then try him next season. He's only 18, definitely worth another chance.
Yeah, but for example I have another player 18 yrs - and He is better in training, have better notes and is much cheaper.
Another DMC? If so you could sell this one but I don't suggest that.
His training has slowed down because he is 6* now.