Manuel Pellegrini believes that Chelsea's style of football is not deserving of winning the Premier League title this season.
The Manchester City boss, whose side face a crucial game against title-rivals Liverpool today, said that Chelsea's lack of goals create an unattractive brand of football and that they should not be rewarded.
"It would be very disappointing, for football, for the fans, for everyone," he said, reports Sky Sports.
"I think that the most attractive football, the more goals you can score, should be rewarded.
"I'm not saying it's not important to defend very well. Football is attacking and defending. But I think that big teams must play as big teams."
Pellegrini's side have notched up 84 goals in their 31 league games - 19 more than Mourinho's men who have played two more matches.
Liverpool lead the goalscoring charts with 90 goals from their 33 games, but having conceded 11 more than City, they have a worse goal difference.
Both managers have been said to be playing 'mind-games' with each other this season in a bid to get ahead in the title race.
City face Liverpool today knowing that if the Reds win all their remaining five games they will be crowned champions.
With the gap currently at four points between the two sides, a win for City will see them just one point behind the leaders Liverpool and with a game in hand.