Since I don't see much change in performance, I think Manchester United will have to play in Europa League next season too.
I'm afraid getting a ticket to the Europa League next season will be quite difficult for United considering their performance in the Premier League. If Amorim wants to build his own squad, then we will see some players leave United first and some will be brought in. The situation is unlikely to happen in a short time. Amorim will do it gradually and adjust the club's finances. Maybe United will not easily burn their money like they have done in the past.