Willian could've set him through on goal 1on1 twice, would your assesment have been different then if he'd scored? I suspect you love him and want him to be great but I think you're gonna have to tone down your expectations a bit, and take our system and his instructions in mind. Great players play great because they get supported by great players (with the exception of some football freaks). Individual performances are hard to pull off in a system that is built around defending. There's a reason Mata has been rather poor when he gets a chance. I don't blame it on form. There's a reason Hazard plays better when he can combine with Mata as well, but this hampers our defense (or what Mourinho expects from our defense). He's no Ronaldo, I doubt he'll ever be as good or even close, but he's still a player most teams would want in a heartbeat. Just enjoy what we have, he's only 22 yo and with some proper singings I'm sure he will raise his level further.