Manchester United still has a number of players who can be relied on to cover the holes left by their core players due to injury, but experience still greatly influences their appearance. Ten Hag should pay more attention to the back line when facing Barcelona, conceding two goals from Leeds was a warning for Ten Hag, especially since the opponents they are facing are stronger than Leeds.
Barcelona have also lost a few important players, but in general Barcelona's defense looks better than Manchester United's, which could be decisive in this match. As we can see, it is difficult for any team to win all the time, surprises can always happen, or some kind of failure, like an own goal or the like, yesterday's Manchester United match, or the recent Real Madrid match is an example of this. But a good defensive game will be a good advantage for Barcelona.
Barcelona has some players who have also average skill like the players who got injured. Let's say that raphinha is as good as dembele. Barcelona shall not feel a problem with an injury that happened with dembele. Manchester united has a serious problem with its defenders as eriksen will not be able to play. The game against leeds has proven that if the defenders of united are so weak right now. It can be seen from leeds united that has been making so many accurate passes and shots.
Barcelona is in more advantages compared with manchester united. The first leg will be happening in camp nou which was giving more moral support from its supporters against united.