If Manchester United failed to do better in the next season I am afraid they're going down to the relegation zone, and that will be a made time for them but am certain the club officials will do all that is possible to bring man United back to it past performance different from what we saw this season.
Although Man United performance isn't as people's expected, they have no reason to drop to the relegation zone. Man United is still a big team, they have many skilled and quality players. They only have a problem with the mentality (motivation) and the strategy in playing, so they need a special coach to encourage the players' performance. Sure, it may be impossible to bring back the performance as in the Ferguson era. But they need to improve their current performance to be more competitive in EPL competition. If they cannot improve it, they will never win EPL title for sure.
I agree with you that Manchester United still has good players but I want you to understand something. It doesn't matter the number of good players they have. Who will believe that Manchester United will go to Europa conference league. They nearly went to europa conference league not for Brighton that helped them to defeat Westham.
So, it is very possible that Manchester United will be relegated if they repeat what happened in this season. I said so because every club is good in Epl. If Manchester United continues this way, who can they beat; Tottenham? Or Chelsea, Westham or Everton, Newcastle or Aston villa maybe Liverpool or Manchester City, how about Arsenal. You see, all the clubs are very crazy and fit. That is Epl for you