Historically these two teams have so many memories in European competition, so it's only natural that in every generation of supporters there will be a very high sense of rivalry. But before this match starts later in the Europa League playoffs, I hope that no player will be injured again, so that both teams can perform with their respective main squads and make the match much more exciting. 
Christian eriksen already confirmed will not able to play against Barcelona. MU has brought sabitzer to the old trafford as a temporary replacement for erikson who was facing injury. It seems like the performance from MU will not be so good against Barcelona. Barcelona may lose its player too. This is play off my friend. Once a team was losing against another team and yeah it will be disqualified. This is the time for MU to send back Barcelona to the camp nou again.
Barcelona is not as strong as people said now. I hope MU will be able to od what was already done by Frankfurt last season.