Big thing from that interview is just de Zerbi confirming we aren't done in the market (and to be fair, I don't see how we could be).
At a minimum, even without bringing anyone in, we're sitting on effectively at least 100m in likely outgoings in Bergvall, Vicario and Romero. Probably more following them too - Sarr, for instance. Add that to the 100m already made from sales and there's money to blow on some top-tier players in positions of need.
Apart from that, also interesting is the rapidly expanding backroom staff. One thing I always found utterly baffling about Levy was that he restricted how many coaches managers could bring with them. I remember Nuno had to fight like hell just to get a few backroom staff to come with him, and the same was even said about AVB way back when.
Now de Zerbi has at least, what, 9/10 first-team coaches? The new guys, Crofts (assistant manager/coach), Tibaudi (strength coach), Saltor (assistant coach), Georgson (assistant coach/set piece guy), Marcattilii (first-team fitness coach), Quinto (senior professional development phase coach), Campbell (individual development coach), Otte (goalkeeping coach) and Brill (assistant goalkeeping coach).
I'm a big believer in the idea of having specialized coaches for specialized training areas - manager sets the general tone, coaches specialize in their fields. So it's good to see the club going on this direction. More expertise is always useful.