Louis Van Gaal appears to be cleaning Old Trafford of players that are not needed. Shinji Kagawa just returned to his previous club Borussia Dortmund while Chicharito Hernandez is leaving too.
Danny Welbeck is leaving The Red Devils as well and this is for the better for them and the club. Van Gaal has stated that they can leave implying the word "GO" as he reorganized Old Trafford.
The three including Wilfred Zaha are of no use to a club that recently signed Angel Di Maria and are resolving their crisis of losses and draws. The three can have better opportunities out of Manchester and may even qualify to participate in UEFA events.