I´m not going to argue it is impossible for Everton to end up in the top 4. It is possible, but I really don´t understand why that should happen.
Love Pickford. Potentially very good. So assume he lives up to his potential. Top 3-4 in the league, but he only balances out what Chelsea, Utd and Spurs already got in that case - an excellent goalie. We will see what happens with City. Everton will then have a better goalkeeper than Liverpool, but that might be the only team they got an advantage on among the other top teams.
Keane is good, but he is hardly any better than what most of the other teams in the top already got.
Klaassen is also good, but he would hardly even be on the bench for teams like Liverpool and City who are stacked in those positions.
Sandro has been talked about for years. Really don´t understand how they got him so cheap, but it is 99.999% certain he will be a significant downgrade on Lukaku.
Rooney I don´t even really bother. Not even remotely close to the quality needed for a top 4 club.
To me Everton is weaker now than they were last season because of Lukaku. With the new owners I´m sure they will become stronger longer term, but I don´t see it this year. Even if Koeman is better than Martinez and that they should improve slightly just because he now has had more time.