The Blues cruised to a 4-0 win over Jose Mourinho’s side.
The visitors put up little resistance as Antonio Conte’s team recorded a thumping win.
And Neville was criticial of his former club after N’Golo Kante breezed through to get Chelsea‘s fouth.
“It’s absolutely garbage defending”
Gary Neville on Man United against Chelsea
The Sky Sports commentator said: “Chelsea are absolutely rampant and scoring brilliant goals.
“They (Man United) are like mannequins those red shirts.
“He’s walked through £130m of midfield. It’s absolutely garbage defending.”
Chelsea were ahead inside 30 seconds after Pedro rounded goalkeeper David de Gea and Arsenal legend Thierry Henry thinks the United No.1 was at fault.
Gary Cahill got the second for the hosts, with Eden Hazard adding the third.