TBF though if they get Caicedo, they'd have one of the best balanced and most talented midfield pairings wrapped up for the foreseeable future which is pretty big. Carney Chukwuemeka looks good too.
Reece James/Malo Gusto at right back is an excellent duo as well. Would have loved to have signed Gusto, yet he'll just be a fill in for Reece whenever he gets injured which is often TBF. Lewis Hall as a backup left back is fine if cucurella is mediocre, chilwell is average and always injured.
Colwill at LCB looks like he's a long term brilliant CB. You'd assume one of the others can step in next to him, Thiago Silva very old of course but still good in a back 3.
From their attack, between Nkunku, Sterling, Mudryk, Madueke, CHO and Jackson (as backup 9, they still need a main 9 but don't think they get one) they've got solid talent. No star quality though, and no starting 9. But definitely there is a team to build off of. My guess is they do something like:
Kepa
James Silva Colwill Chilwell
Caicedo Enzo
Madueke Nkunku Sterling
Jackson
I'd say they have good enough depth at the back 4, enough depth on the wings between Madueke, CHO, Sterling and Mudryk but not really any depth in midfield or up top. And Madueke isn't much more than an unproven talent. With the right coaching I could see them step up loads. Caicedo is absolutely vital for them though. If they fail to get him they'll fully flop. They'll probably be pretty good if they do get him though, once they all bed in.