I think the trouble is there doesn't seem to be a system. He changes the starting line up almost every week and clearly doesn't know his best xi.
Havertz has looked half the player he was at leverkusen, whether its positional, coaching, style of play i don't know but he just hasnt looked up to it, or indeed up for it, games have passed him by. Pundits more knowledgable than me suggest he lacks the physicality and was simply more suited to leverkusen's system - im not an analytics anorak so have no idea what system they played regularly vs that of Chelsea's. Only time I saw leverkusen in recent years was our meeting vs them in the europa.
Ziyech is an anomaly.. has had a horrific time with injuries since he joined and he is no spring chicken - he's 28 in March this year. Not a clue what his record with injuries is like historically but he is without doubt a class act, just need him fit and in a settled eleven.
Its defensively where lampard has had a fucking nightmare. Rudiger and zouma as frequent starters at CB aint gonna win you a league title.
That said conte managed it with that fuckin clown Luiz playing at the back so anything is possible!!!
Lop sided recruitment for me though. Clueless.