The Man City boss hit back at the criticism of his squad's character by saying that he didn't see the personality when he destroyed them.
The United squad was outclassed by Barcelona in the two European finals, tasting defeat on both occasions.
The capitulation was suggested by Berbatov, who claimed that City lacked leaders because they couldn't train people with personality.
The disappointment of the Madrid defeat was not felt by City as they scored five goals in a row against Wolves and Newcastle to take a commanding position in the title race.
The criticism from the former United players was still fresh in the mind of the City manager when he was asked about their recovery from that result and the character they have shown.
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The same character and personality that we lost in Madrid in the last two or three minutes is what the team has been lacking since the trip to Spain.
I played against former players like Berbatov and Clarence Seedorf, who were there. When I destroyed them, we destroyed them in the final against United.
The character and personality are the same. When we have two chances to score, we can't have personality.
After the last four games, we score 22 goals and have an incredible personality.
Sky Sports pundit Gary Neville spoke glowingly of Manchester City's response to their exit from the Champions League, picking out Kevin De Bruyne for individual praise.
What Kevin De Bruyne did at Wolves was exceptional.
It continues to be exceptional. Man City went out of Europe in the most devastating fashion after Kevin de Bruyne left the group stage.
It really does have a big impact on you when you go out like that. The way in which they have reacted on the pitch is brilliant, and the way in which they have reacted off the pitch is devastating.
It says that we have recovered, we are taking it in our stride, and we are going again. The club is doing business quietly and at the right time.
For the past five seasons, City have been a great club. They are going to win four leagues. They have a big game on Sunday. They still have a hiccup and that is whether that hiccup is going to be enough for them.
Even if City do lose, the goal difference has extended more than what would have been desired. I don't think the league is over, but Kevin De Bruyne has responded brilliantly over the past two matches.
Aymeric Laporte faces a late fitness test ahead of Sunday's crucial Premier League trip to West Ham, live on Sky Sports.
Kyle Walker, John Stones, and Ruben Dias are all in the treatment room after being injured in the Wolves game.
Sunday 15th May 1:00pm Kick off 2:00pmNathan Ake and Fernandinho are both struggling with injury.
They are in treatment and will be available tomorrow. The availability of the players will not be decided until the day of the game.
We need four points to win the title. If you win at West Ham, it will be done.
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The release clause in Erling Haaland's Man City contract can be triggered during his five-year contract.
The deal to sign the forward was struck earlier this week.
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Sky Sports News understands that the clause is over 150m.
Man City are comfortable with the clause being included in the 21-year-old's deal given the size of the fee required totrigger any sale, which would be a club-record sale.