If Ruben Amorin do not win any major trophy during his stay at the club, their is no way he will be better than Eric ten hang because during the stay of Eric ten hang he won a couple of trophies even when his Manchester united team was terribly bàd, so I think that he still deserves some respect from the faithful fan of Manchester united.
I am not going to judge Ruben Amorin's Manchester united just yet, till after their first ten games, and how many points they can get in the total of 30th, that's when am going to know if they deserve to be criticized or not, as for now, am going to keep my reservations to myself till after ten games.
This is just like the beginning of his career for United, it is his first full season he will take the club as the manager and the first transfer window he’s had. There is still enough time for him to work and try to get his team to shape. This season there are not much expectations for Amorim other than finishing in top 6 this season, any other achievement better than this will be a plus for Amorim, we can’t judge him just yet until his 2nd season at the club.