Jose has done nothing to improve them, he has sidelined their record signing just like he tried to do with Martial.
They have Kane, Son, Alli, Bergwin, Lucas, Lamela. That's a good enough bunch of attackers.
They have Sanchez, Toby as their CBs but somehow Jose wants to play Dier in any position possible.
They have Lo Celso, Ndomble as their creative midfielders. That's more than 120 million worth of talent + players like Winks, Gedson Fernandes, Sissoko, Hojbjerg. That's good midfield if he sets his team to attack rather than play deep and try to play long ball to Kane.
Every club have problem areas, but somehow with Jose everything is magnified. Poch reached CL finals with same bunch of players and yes it came to end as with most managers at clubs for long time. They still have good players but needed good manager but ended with Jose which means their players will look worse than they are, problems will look bigger than they are.
Lloris
Doherty
Sanchez
Toby
Davies
Hojbjerg
Lo Celso
Ndombele/Bergwin
Son
Kane
Alli
That's a good team, since he prefers 4-2-3-1, it means he will have players like
Aurier
Foyth
Dier
Tanganga
Winks
Sissoko
Lucas
Lamela
Gedson Fernandes
As his second team, with players like Ndombele, Ryan Sessegnon available too.
Since they have Jose, it will be always players who are not good enough.