The match between these two teams might not be an easy match but amongst the two Barcelona is the most favourite to winning the game, except for some surprises that comes with football.
United is also not a weak team at the moment. they've been trying to get better after Ronaldo's departure. although in terms of satisfaction maybe Ten Hag is not so satisfied with his current squad at United. he is still looking for a reliable striker to put in the opponent's defense. until now United has not got it.
and the match against Barcelona, maybe it won't be easy. and matches like this are precisely what will be very difficult to predict.
both can win the fight. I also still doubt whether Barca will be more dominant.