I'm going to contradict what I said yesterday slightly here when I compared Havertz to Vieira's impact, and sort of agree with
@Zehner.
For me anyway, looking at Xhaka's change of role last season, I didn't expect Havertz to be heavily involved in the build up. Arsenal use Zinckenko, Rice/Partey and Odegaard for that.
While I want him to be neat and tidy when on the ball, and off the ball he has to do his defensive shift, the main use I see of Havertz is to ghost in and be on the end of chances in and around the box.
However, in saying that, that means there's no hiding place for him. He can't miss chances like he missed on Sunday, and he can't give away possession like he did for Utds goal. If you're not offering as much in the build up, then you need to do what you are on the pitch for. He should have a couple of goals already this season with the chances presented to him, and then people might perceive him differently. But he hasn't taken them, so people are rightly criticising him.
People will rightly ask does that justify the massive outlay on fee and wages, and would there have been better alternatives for that role. For me, and for most people, they'd say there were better.