Sure, that pass could cost him and us and I think he'll learn not to do those things again but to be fair, I liked his cockiness more than if he'd play affraid of taking a risk and make a mistake. IF he'll fail here I don't think it will be because of the lack of confidence. Different positions but I think he has some of that (positive) arrogance of Valdes or MATS. Even if/when he'll make a mistake I think he'll quickly forget about that and continue playing with confidence.
We'll see how he'll do against better teams that will put us under more pressure consistently but for the first time I think he did really well, especially considering the fact Digne (who also had a good game but is not used to play as CB) was his partner. I'm looking forward to see him playing alongside Umtiti and Vermaelen (don't think we'll see him a lot with Pique).