Dunno if his confidence is shot since MU return leg and his mistake but he has been terrible ever since.
And when i say terrible, he is terrible. Worse than an under 18 player, which may indicate it is not his real level.
Before that, he still had error in him but was playing well. Like he would cost some penalty here and there but the rest of his game was solid. So, you could just put that on him being still young and writing those mistakes out of his game.
Now, he is a joke. Will have to wait and see if he can recover.