#4 Shaky defense
Now, United's defense is by no means terrible, but at the start of the season they seemed nearly unbeatable at the back.
They started the Premier League with 8 clean sheets in 10 games, and that includes clean sheets against Liverpool and Tottenham. Compare that to their recent form, which includes 5 clean sheets in the last 10 games in the Premier League, with only one coming in their last five matches.
It seems somewhat ridiculous that Manchester United are relying on the likes of Young and Valencia as fullbacks, with both players being 32, while Liverpool are using Robertson and Alexander-Arnold, and City are using Kyle Walker, Danilo, and recently Zinchenko.
Things do seem to be on the up for United though, as star centre back Eric Bailly seems to have recovered from his injury, and Luke Shaw slowly looks ready to be taking Ashley Young's spot.
If Lindelöf can adapt to the premier league style, and Marcos Rojo and Phil Jones can have some long injury free spells, United should be able to sort this problem out with relative ease. Thank god for De Gea.