They have no cohesive structure or gameplay. It's just a bunch of players trying to put together some sloppy passes and hope it results in a shot on target at one point. If they were really at their peak, the would be able to use di Maria and Falcao to the best of their abilities and score goal after goal. Falcao is one of the world's best strikers, and so are Rooney and RVP, but all three of them are struggling oddly at United under Van Gaal. Shows to me that Van Gaal isn't concerned in getting the best out of his three world-class strikers.
I found a pretty interesting analysis on why Man United has been struggling this season.
http://myweeklysports.com/2015/03/12/why-manchester-united-wont-finish-in-the-top-four/
Sorry I can't copy the article because it has gifs embedded into it.
I agree with this article. It is so true. Manchester United has been struggling for so long, just failing to complete the most basic defensive tasks. It is actually ridiculous. Thoughts?