I would've probably countered your opinion if only Manchester United were going to manager that's different from the one that's been at the club for the past two seasons but since Erik ten Hag is still the club's coach and will still oversee their games next season, I seriously doubt that Manchester United are going to do anything better than they've done in recent seasons. Considering the quality of players at United, I think they have all it takes to become a serious contender for the league title next season but the club manager haven't been convincing enough with his performances for anyone to think they can challenge the English champions Manchester City. Like you rightly said, Manchester United might make it to top four but not winning the league title