I don't and never will understand this sort of opinion. di Maria has plied his trade in a position where, in the modern era, very few players have found much success. Where the likes of Robben, Ronaldo, Ribery, Messi, Ronaldinho and others made the shift towards the more successful wide forward position of the front three, di Maria continued to find relative success in the ever declining winger position whilst playing second fiddle to his "galactico" team mates at Real Madrid and Argentina.
Aged 22 when he moved to RM, he managed to accumulate 9 goals and 14 assists in 42 starts in his first season.
In his second season (an injury plagued one), he scored 7 and assisted 16 in 23 starts.
In his third season, he scored 11 and assisted 11 in 37 starts.
In his last season (his outstanding season), he scored 12 and assisted 23 in 44 starts.
In total, whilst predominately playing with likes of Ronaldo, Ozil, Bale, Isco, Benzema and more, he scored 39 and assisted 64 in a total of 146 starts (193 apps).
Yes, stats don't tell the full story. But when you rack up the numbers he has, and add the fact that he's still pretty young, they seem to illustrate a giant chunk of a story. People seem to let their emotions get the better of them, which is the classic case on here. He may have had one WC season, however, 27 goals and 41 assists in 102 starts from the other three would are far from average seasons.
If we sell him, I fully expect him to tear the Ligue 1 apart, and I expect him to help PSG mount a proper CL challenge. I mean this is the guy who led Real to their infamous La Decima...