Cristiano Ronaldo’s 13th goal of the season helped United close in on the Premier League’s top four, with the Portugal international scoring a penalty with quarter of an hour left in Norfolk to ensure Ralf Rangnick maintained his perfect winning record since he replaced Ole Gunnar Solskjaer at Old Trafford.
Yet former United defender Neville was not impressed with Rangnick's side, as he suggested the flaws in their make-up are still far too visible despite the managerial change.
"It was a really strange one to understand what happened out there on the ball and off it," Neville told Sky Sports.
"Those players will have had a free week to prepare so I was expecting a ferociously frantic start to the game. Really high pressing, loads of quick play and it was lethargic from minute one.
"On the ball they were so sloppy it's untrue. They gave it away so many times it was unbelievable.
"Any other team in the league there playing against Manchester United today would have probably at least get the point or maybe wins the game.
"The most important thing for United is the three points and clean sheet. He will take that all day long.
"He will see it as a good week but United will have to improve a lot to get anything in the next games."
United's interim manager Rangnick also suggested his side could make improvements, as he suggested there is plenty of room for improvement.
"From the start we controlled the game but didn’t always have the best possible solutions," stated the German. "Defensively we did well, tactically in the first half we didn’t allow them to have too many shots or chances.
"At half-time I told the boys we needed to increase the speed and intensity of the game. Th second half was a little bit better but at the end we were lucky to have a clean sheet and there were two or three clean sheets by David de Gea.
"It's another clean sheet but still a lot of work to do. The second half I was not at all happy with the amount of corners that we gave away, but we got the three points.
"We have conceded the highest amount of goals in the top ten. Now we have two clean sheets which is good but we still need to improve on that away, especially against physical teams or teams that attack high like Norwich did.
"It’s also a question of body language and physicality and this was one of the major issues that we could have done better."