I would rather focus on what we have personally.
I'm very happy with what we have brought in mate. Gutted about Zaha because he'd pushed for it and would have massively improved us, but in terms of our additions I think they're all middling to very good, with the middling signings having the potential to be more than decent too.
We've lost our best player and will have to adapt. That's on Silva though, but will take time.
However, I can't help but feel going into a season with three senior CBs (one of whom isn't ready imo to be 3rd choice at this level) is reckless. I hope I'm proved wrong. But it was abundantly clear all summer that we needed a player there, and one of quality. I get we wanted to wait out for Zouma, but you need to have other options. We needed to be proactive. Instead, a late, out of the blue move from Luiz has left us with our pants down. That's not good enough.
So ultimately it ends up being nearly as much about the business we didn't get done.
In Kean and Iwobi, have we brought in enough goals to compensate if we have injuries at the other end, or for however long it takes to switch systems now Gana has gone?