Speaking to Premier League Productions, Dimitar Berbatov said: "Manchester United are a proper team and look like one, that's why I said this win [against Manchester City last week] is important.
"But even more important for how they achieve it because, to be 1–0 down against Man City, that's a big deal. Not many teams can overcome that sort of result. But when you do it, that gives you even more confidence.
"It gives you a reason to be happy after the game and to know you are in the right direction building team spirit we saw. For me, that's even more important than the result. We're now looking forward."
Man United came back from behind to beat Man City 2–1 at Old Trafford on Saturday thanks to goals from Bruno Fernandes and Marcus Rashford.
The Red Devils will be looking to replace Pep Guardiola's side in second place in the Premier League table when they face Crystal Palace on Saturday night.
