But for me Manchester United will try their best in the European league to win even though the opponents they face are quite strong but I am sure they will show their best game. In addition, Manchester United only have one chance for them to penetrate the Champions League so Amorim must take advantage of the European League as best as possible to win both legs in the last 16.
Real Sociedad is indeed a strong opponent but in the statistics of the meeting where Manchester United managed to win two wins when facing Sociedad so there is good capital for the Amorim squad to steal a victory in the first leg. But Manchester United's shortcomings of course they do not have a qualified striker and their defense line is also not strong enough.
It should be a balanced match because Real Sociedad and Manchester United have almost equal strength this season because both have not found their best performance and that can be seen from the performance of both teams in their respective domestic competitions.
However, because Real Sociedad is playing at home, they are slightly favored, but overall, if you look at the performance of both teams, I am sure there will be a fierce match and anything can happen.
And what happened in the past I think will not have a big influence, this is an away match for Manchester United so don't expect too much from them.