This is such a falsehood and shows that you really don’t understand the technical aspects of football, and are obsessed with perceived attitude/work rate. No offence.
Dele, like what appears to be happening to to Winks, is not good enough to survive the philosophy shift of the team. He was putting up generational numbers when the Poch system was at itbut his actual development to become a better all round player was stunted. His lack of certain attributes means he can’t play in this current system.
Neither N’Dombele nor Dele nor Winks have had a personality transplant in the last year, one way or another. They’ve moved up and down in Jose’s pecking order for technical reasons.
Jose wants to play a certain way, and he’s found the players in the squad who can play that way to a high standard, and weeded out the ones who can’t. Just like every manager ever.
If it was solely down to “attitude” then Érik Lamela would be our best player, but it’s not and he isn’t.