I understand that but if you look at the midfield Xhaka, Elneny & Lucas T were brought in by previous managers/regimes at a cost of around 70m and most people accept they are not good enough.It is always somewhat difficult to buy players by the fact its a competition and you have to compete. If our ability to compete which is dictated by Arteta and Edu is insufficient then yes you can blame them - not entirely for the club's situation but for their actual failures such as their transfer plan and their inability to reconcile reality with what they cooked up. Assuming a best case scenario and planning around it is rarely the path to success, but this is what we seem to have been left with.
So yes I think we can apportion him some blame, it comes with the job.
I do think we have a plan this year to bring in younger players to develop and if they dont work out sure blame the current set up & manager.
I am wary of apportioning too much blame to Arteta for Willian & Cedric as they were both Kia players and possibly more EDU 'favour' signings.
Kia had waited years to get into the club and looks to have cashed in big time at our expense.
Hopefully it appears we have learnt from that.