Our back four haven't been a solid cohesive unit since the Walker Days. I think poor performances from Trippier last season and the Toby contract saga have contributed to this so I our defence still has a lot of work needed.
RB is our weakest area by far, and when you consider our "finished product" option Aurier is both injury prone and very clumsy it doesn't instil confidence, Foyth may well be the long term plan but he is still a developing player and similarly clumsy and injury prone.
At the moment KWP is by far our best option, it feels like when he makes mistakes he learns from them and you know hes committed as he's fully COYS. Sissoko hugely important to his development at the moment, but he needs to work on being more physical and attacking defenders more. Man City's movement when they play at full tilt is A1, the only way to beat it is to hope they spurn their chances or literally man mark every single player.