Jesus, watching Utd trying to defend... lol.
The guy whipped the cross in and when it came back towards him, no one reacted at all, two Utd players should easily have been first to the ball but stood waiting. Clearing it as well, no urgency, panic, no one in midfield to play it out.
Moyes bought Mata, but it was a central midfield you needed, and a centre back. It's not entirely Fergie's fault because he did buy Rio/Vidic replacements and in plenty of time, but both have turned into complete sicknotes, which also prevents them really improving as much as they need to replace those two CB's, who themselves are getting ever worse fitness wise.
Utd now need 2 cb's, and top class ones, probably an experienced 30+ defender and a 22-28yr old, experience and then some quality/potential.