The Argentina legend was "absolutely ecstatic" with the Citizens' domestic championship triumph and revealed how he celebrated with his son-in-law Kun AgueroManchester City's comeback against QPR on Sunday, which helped them secure the Premier League title for the first time in their history, and only their third league title ever in the top flight.
The Citizens had looked set to miss out on the league crown as they were trailing 2-1 when the game went into stoppage time, but goals from Edin Dzeko and Sergio Aguero eventually helped them to a 3-2 comeback win, and the Argentine legend was over the moon with his son-in-law's success.
"I asked the score at one point and QPR were 2-1 up, and I was very upset. Then, in the changing room after we had finished training, I heard what happened and I was absolutely ecstatic. I was so happy, I was smiling from ear to ear. I enjoyed the news with all my heart," Maradona stated to Sport 360.
"The whole Maradona family is extremely happy. I spoke to Sergio [Aguero] and my daughter Giannina, and my grandson Ben. I congratulated them all and we shared the great moment.
"Aguero has proved again he is a world-class player, and it takes a true champion to be able to score a winner like that in the 94th minute. This win proves Manchester City are a great club, especially to be able to overcome a tough rival like United."
Aguero's strike at the weekend was his 23rd league goal of the 2011-12 campaign.