,.\\.,\.,and the reason Man Unite chose Diego Leon is because they believe that the left-back player can be a long-term asset for the strength of Man United's back line.
Manchester United needs a defender and maybe they see a match for his playing style and his young age also has the opportunity to develop into a mainstay defender in the future. Talking about opportunities, it might be big for him to develop because the defenders owned by Manchester United are now in an uncertain condition due to injury factors. The market price for the player is also not too high so Manchester United does not need to spend a lot of money. I also saw some video clips about him and indeed his defensive ability and running power are quite promising and maybe this will be a long-term prospect for Manchester United.
Yes, if we look at their reasons, it is because Leon is considered a defender who has potential for the long term for Man United. What's more, the fee is not that high, so at least Man United can save more money to get other top players later in the transfer market. Hopefully this time the prediction from Man United to get players who can really work together with Solid as a team at the club is successful. and there is no more disproportionate waste of purchasing funds.
And yes, for his age, his defensive style and abilities are quite good. It's just a matter of how Man United can polish it and optimize it within the team. either directly into the first team or as a substitute first.