He is making too many mistakes but bear in mind that we haven't exactly had a settled back 4 yeat which makes it difficult for him to trust/know what to expect from them. He is young, coming from a team that were just about as crap as us finishing bottom in the italian league so doub't he is going to be completely full of confidence anyway but the constantly changing defence isn't going to help him in any way (bacuna/elphick/chester/cissokho have played 3 times in which we only conceeded the one fluke/poorly kicked huddersfield goal, the rest of the games have been a bit of a jumble)
He needs to work on positioning from free-kicks though, more than the individual mistakes this is something that can be worked on & sorted out quickly and his positioning & setting up of the wall has been absolutely terrible so far, luckily only 1 goal has come from it but this is down to tohers poor shooting more than anything else