I think we're going to see the same version of 4-4-2 that we saw last seasonMartinezCash - Konsa/Carlos - Mings/Torres - Moreno/DigneMcGinn/JPB - Luiz - Kamara/Tielemans - Ramsey/Buendia/JPBDiaby/Bailey - Watkins/Archer/DuranWe've got a huge possible range of possibilities in midfield so I didn't list every possible permutation (Tielemans can play in Ramsey's spot for example). The only place we still look a bit short is right back and up front, where I think Archer and Duran are too untried to be considered reliable replacements if anything happened to Watkins.
I just hope we don't have some kind of separate cup line up or wholesale changes, at least not for the ECL or the FA Cup; hopefully given Unai's aims and his past successes, we won't anyway. We did so well to qualify for Europe, so we need to take it seriously like West Ham did. Maybe for the EFL cup it would be ok to rotate, or (if we get there and do really well) a group game in the ECL where nothing is riding on it.
Second keepers we've had have included Spink, Bosnich, Spink again, Oakes, Guzan and Given. It's been a long time since we had a reliable one but Olsen is surely the worst.