I suspect it will be a tedious encounter. In La Liga, Sociedad have a goal difference of 23-23 in 25 games. It is unlikely that we will see any bright games and perhaps the outcome of the confrontation will be decided in a penalty shootout. United are favourites in this pairing but even the first game could turn everything around, as United have often failed this season.
If there is one team I had wanted Manchester United to avoid it will be any Spanish team because the long history of Manchester United is that they don’t enjoy playing against them since their are a low block team. But if we analyze the recent performance of Manchester United well under Amorim and even Ten Hag you will not if they usually do well against clubs that actually like holding the ball very well. This is the reason why you will notice Manchester United having better games against top oppositions and they don’t do well against Lower or mid table clubs. Real sociedad as a Spanish club loves to hodl more of the ball that is where Manchester United will use their counter attacking options but sadly they can have so many players out to injury at the moment