They're all guilty of it though (Martial to a lesser extent in fairness) ... the dreaded check back and sideways/backwards pass. I mean there was a point today where Lingard raced away from one defender, then slowed down so another one could catch and face him up - and our entire attack just stalled. The criticism is applicable to our entire side... more so Mata then others? Yeah, you can argue that ... but then it doesn't explain how our slowest, most insipid attacking performance of the season came against PSV, and he wasn't even on the pitch! It's a problem that extends further then just a few players... it's how we currently play football.
I repeat though, I'm not absolving Mata at all, he has been shit of late and needs to step up. You can tell too, because he normally always tries to get on the ball as much as possible, and he hasn't been doing that of late (he did in that last 20/30, where the team as a whole stepped-up ... but it wasn't enough)