They will face Real Sociedad in Spain and the first match will be difficult away. Also, Real Sociedad, who they will face, is one of the strong teams in Spain. They are strong enough to beat Manchester United, who are not in form. Therefore, if they want to advance to the next round, Manchester United should not lose in Spain. They can win the match in England, but their job is really difficult in Spain.
Manchester United's performance has been quite bad in the previous few matches so getting a win at Real Sociedad's home will be much more difficult. Manchester United must play better if they want to get a much more satisfying result and if they want to find a safe point, drawing at Real Sociedad's home will be much better because they can chase a win when playing at Old Trafford. The team's condition is not favorable for Manchester United because several players are injured so it is much more difficult to get a win at Real Sociedad's home.