I would say that if Manchester United's performance does not improve before the winter transfer window, United should first sack Erik ten Hag and hire a new coach. And then revamped their squad. In the previous transfer window, we saw that Ten Hag could not add the right players to the squad for Manchester United. He added young players like Hojlund to Skoda. And Hojlund is yet to score in the Premier League this season. And so I don't think Ten Hag will be able to select the right players for the squad in the next transfer window. He will waste money. While Chelsea's performance has gradually improved, Manchester United's performance is still very poor.
MU has actually had to fire Erik Ten Hag since the start of the season, but currently MU still does not have the option to find a suitable coach. The last rumor I read last year was that Zidane was considered the right figure, but Zidane has not yet responded to this rumor. Apart from Zidane, there is the name of the former MU coach, Solksjaer, who we all know has failed before. I don't know why until now MU has not tried to approach Conte, maybe with MU, Conte can give better results.