I'd agree it did start well this summer, but through very little prep from Arsenal I'd say.
What I mean is Lacazette you only got due to transfer ban to Atletico and Kolasinac was done in January wasnt it?
So you could say there has been no real thought or effort in this summer window, compared to the rest from Arsenal board. Shocking really.
Kolasinac was signed late April / start of May I believe, but still way before the window opened. No real action from the club since the window opened.