I think we need:
Number 10 and a wide forward with pace who can come into the starting XI.
I'd be wanting two midfielders as well, likely younger but with a profile of sorts that let's us keep the style we have with McGinn and Onana/Kamara out the side. A left side centre half too.
Quite a few I'd trim, but if we could get 5 in: 2 first team, 3 for the squad, I think we'd have another excellent season.