State of that.
David de Gea: 5
With all the usual caveats about not really understanding goalkeeping, and with all the obvious context of him being the only reason United aren't in a relegation battle, this was a miserable moment for De Gea to make a complete mess of a one on one. Getting chipped at the near post while standing up is Not A Good Look. However, he kept United from a hammering thereafter.
Guillermo Varela: 2
At some point, Varela's inability to defend was going to catch up with him. Skittish and vulnerable for 45 minutes -- perhaps not helped by the presence of Juan Mata in front of him -- he was made to look exceptionally silly by Philippe Coutinho. A cannier fullback would have tried to foul him before he got into the box, calculating that the yellow was worth it; a better defender would have known not to square himself up quite so completely.
Chris Smalling: 4
The best defender in a team that cannot defend.
Daley Blind: 3
In Blind's defence, he looks absolutely shattered. In United's defence, Blind looks vaguely transparent.
Marcos Rojo: 4
Can't remember him doing anything. Good or bad. That's probably unfair, but them's the breaks.
Marouane Fellaini: 2
We don't know what Morgan Schneiderlin has done to Louis van Gaal, but it must have been awful. Still, no review that we could write here would be as pithy, or as pitiful, as the response of Liverpool's defence to Fellaini, deep in the second half, receiving the ball on the edge of the box. To a man, this team built around pressing and pressure stood and looked at him, waiting for him to panic and give the ball away. Which he promptly and obligingly did. There aren't many games when a player commits a red card offence, gets away with it, and then goes on to have a worse game overall than if they'd simply been dismissed.
Michael Carrick: 3
Anthony Martial: 6
United's only silver lining, Martial made Nathaniel Clyne look like a total patsy all evening, and got United going when he drew the England fullback into a stupid challenge, then slapped home the penalty. Turns out he not quite at the stage yet where he can win games on his own, mind.
Jesse Lingard: 4
Did his best, but was mostly in the wrong position. Missed a free header that could, perhaps, become emblematic: the difference between 'quite good' and 'very good' is that 'quite good' makes the run and gets the chance, but 'very good' doesn't let the keeper make the save.
Juan Mata: 3
What he was doing on the right wing we'll never know. That sentence applies in several senses. Missed a wonderful opportunity to score an early goal when the ball dropped to his left foot as he stood unmarked in the penalty area. That he missed the target completely suggests a footballer in something of a state.
Marcus Rashford: 5
Poor kid. Somebody should have taken him aside after those four goals and pointed out that despite Arsenal and Midtjylland's best efforts, this version of Manchester United simply doesn't know how to get the ball to striker in good areas. Which is why Rashford spent his evening roaming around, looking quick, sharp and skilful, and getting nothing even vaguely resembling a sniff of a suggestion of a hint of a rumour of a thought of a whisper of a decent chance.
Antonio Valencia (on for Varela, 45'): 5
Better than the man he replaced, albeit in a dead game. There's something quite appropriate about bringing on a substitute whose stern face precisely matches the mood of the crowd.
Matteo Darmian (on for Rojo, 62'): 4
Not the game-changing substitute Manchester United needed. Absolutely the game-changing substitute Manchester United deserved.
Bastian Schweinsteiger (on for Carrick, 70'): 5
The third piece of perhaps the greatest set of substitutes in human history, Schweinsteiger came on to see out the draw and secure a valuable point, and did excellently. Wait, what?