That is much more important and if you look at the opportunities then it is still quite big for Manchester United to enter the play-off round. Manchester United can take advantage of the remaining matches and they must not lose if they want to qualify directly for the last 16. Facing Viktoria Plzen is not difficult because they are not one of the tough opponents and Amorim can take advantage of the match to get full points. If Manchester United are targeting one point against a weak opponent then I don't think they deserve to compete for the title because they should be able to win the match by a big goal against a slightly weaker opponent.
Viktoria Plzen is not as good as Manchester United, but what is more important here is to see the opponent seriously enough where Manchester United must really play well when facing Viktoria Plzen so that the team cannot make a more extraordinary surprise during this week's match. Because Manchester United is currently very close to Viktoria Plzen in the Europa League standings with the same points and if Manchester United can win, of course their chances of qualifying directly for the last 16 will be very open even though it still depends on the results of the matches of several other teams.