Not sure who apparently said this, but I got me thinking: has any attacking player really flourished since LVG arrived? Martial has looked very promising, but after him, I struggle to think of anyone. Rooney has fallen off a cliff (as did Van Persie in his one season with LVG
Januzaj has regressed significantly; Di Maria and Falcao were both busts (probably not LVG's fault in the case of Falcao
Wilson has shown next to nothing; Depay looks awful; Mata looks half the player he was at Chelsea; Fellaini (in so far as he is an attacking player,) has been reduced to the role of long-ball target man (a role I actually think he's not that good at
Chicharito, Nani, Welbeck and Kagawa (all fairly productive players under SAF - well maybe not Kagawa, but he showed flashes) were sold off or loaned then sold off almost immediately.
Herrera has looked good, so of course he's been an occasional starter at best. Ashley has also improved - he's now a fullback for us most of the time.
One can make excuses for all of the players above not performing, but after a while, a disturbing pattern emerges.