Do not stress Manchester united will win Lyon how and away, i do not see Lyon as a threat to ,Manchester united, in spite their current poor state. Lyon does not stand a chance to win Manchester united. Its a workover for Amorim, I just wish before the game Manchester united players return from injury, because is injury that has really affected Amorim's this season. Lyon are really inform but they have no chance to beat wounder Manchester united that all their hope and dream to get it right are on this trophy.
You don't need to underestimate Lyon because they might pull some stunts on that day. Don't forget that they are in form. On the other hand, United shouldn't find it difficult to win Lyon and qualify to the semifinals because they are performing pretty good in this league. United is unbeaten and I don't think that they will mess up the only chance to put things right in order to be in UCL next season.
Don't underestimate Lyon, in fact you shouldnt underestimate any team that gets to this stage of the cup, they could surprise. However, Manchester United should have an easy time winning and qualifying for the semi finals
So we will see what happen