It is said that Manchester United was pursuing Ronald Araujo but gave up on this transfer recently.
Source:
Football TransfersThe Red Devils has been in intense search of defenders these days. This is the best thing for them as it has been their weakest point. However I assume there isn't much progress on a player so far. I didn't even know they were interested in Araujo. But it is good to hear they have dropped their interest.

I mean he really tends to make simple mistakes. We have seen many examples at Barcelona. I don't believe he is reliable.
Traditionally, we can say that the Red Devils are an attacking team. Even though they were an attacking team, they always needed good players for defense and they usually had good defenders. It's good that they concentrated on this season, the biggest problem was in the defensive line, last season they are trying to put resources in the right place.
When I look at the transfers, there is nothing new for Manchester United at the moment, they are working quietly for the most sought-after defenders and other positions.