We may have gave ourselves the best chance of having a strong season rather than just a strong start though.
Koeman may feel we have enough to win our first 4 or 5 games with what we have and would prefer to hold on for his top targets, like Hart, Koulibaly, Mata and Witsel. Which in turn would make a real difference to how our season pans out in the long term and would put us firmly on the top table.
Or he could panic, sign average to decent players for absurd fees like Jordan Ibe for 15 mill, Wijnaldum for 20+, Townsend for 14, Mane for 38, Wanyama for 15 etc and maybe make us better in the short term but they're not making any difference in the long term. They certainly wouldn't put as the top table again unlike the names listed earlier.
There's a reason the top players haven't
moved yet, as there is a lot if competition for them, but come deadline day I expect and think we'll see Everton have set themselves up in a different league moving forward to the one we've been used to previously.