De Gea's distribution and commanding of his box has been under scrutiny throughout his United career, I would argue rightly so. Both have improved since his baptism of fire in the PL but there's still room for more development, particularly for such an otherwise highly accomplished keeper. Not to excuse him completely but, though you must admit he had a poor world cup personally, the Spanish defence was all over the place as a collective and as for what he's had to deal with in front of him here...
We can't expect him to bail us out time after time with great saves while working on weaknesses in his game with the chaos we have going on at the back.