A stirring comeback against Pep Guardiola's men last weekend prevented United's neighbours from winning the title and Mourinho suggested that dramatic result created complacency in his side.
Manchester United fans were delighted to see their record signing back to his best as he prodded past Ederson twice to level the derby and help delay City's title charge. We are a team that in the last three matches [against] Chelsea, Liverpool and Manchester City, has won all of them.
Jose Mourinho told Paul Pogba he does not expect match-rescuing heroics from him every week after his two-goal salvo against Manchester City.
Because of goal difference, United realistically needed to win all of their six remaining games and hope City lost their last five matches.
He is the first Spanish manager to win the Premier League title - a prize he says is the hardest to claim in Europe.
"I don't know if I was the first or second or third but I congratulated them face to face when I had the chance", Mourinho said.
Speaking after the 1-0 defeat to West Brom at Old Trafford, the midfielder insisted the team will fight to progress past Tottenham Hotspur in the Emirates FA Cup semi-final next weekend.
Mariah Carey SUED By Her Former Manager For Breach Of Contract!
Mariah Carey's former manager is reportedly preparing to sue the singer for sexual harassment and unfair dismissal. Civil Rights Act, violating the Fair Employment and Housing Act and breach of contract.
A week after City surrendered a 2-0 lead to lose 3-2 to United and squander the chance to wrap up the title in flawless style against their arch-rivals, it was relegation-bound West Brom who served it up on a plate.
"Whatever you read, I know what really happened".
"Eight titles are eight titles and three Premier Leagues are three Premier Leagues".
City now sit 16 points clear in top spot with five games to play and could yet to break various Premier League records by the end of the season, with the 100-point mark within their sights.
The outcome of that game meant that Manchester City were crowned Premier League champions. Players didn't play simple.
Although the West Brom board are believed to want somebody with more experience, Moore certainly did his chances of becoming the next full-time boss no harm, even if avoiding relegation looks a lost cause.
In addition, based on three points for a win, City's now tally is the most by any side after 33 games of an English top-flight campaign.