We were fortunate in that both Watford and Wolves allowed us to play back-to-back games vs. two teams, both of which operate in a similar manner to Barça in terms of approach and style. Aside from small periods of improved tempo and pressure, we've looked decidedly short of ideas, bereft of runs off-the-ball, lacking in any kind of mental strength when the game takes a situational turn.
I know that not having Martial and Rashford is a factor, however, it doesn't explain the inexplicable drop of form mid-way through a half of football.