Mancini's son Andrea, who plays for Spanish side Real Valladolid, this week added spice to the clash by saying his father knew more about football than Mourinho.
He qualified that by saying Mourinho was a better motivator and added that the ideal manager would be "a mixture of the two".
Roberto Mancini said: "My son has his opinion, I respect his opinion. Mourinho is a good manager but it is an opinion. If you talk with Mourinho's sons, they say the same."