It's a happy ending to a disappointing week that saw them dumped out of the Champions League by Liverpool and blow a 2-0 lead in the Manchester derby that would have seen them claim the crown against their bitter rivals. Even if United had won, they would have been 13 points behind with five games to play and a City win at home to Swansea would have sealed the title.
Herrera had a penalty appeal waved away after seemingly being tripped by Craig Dawson, while Lukaku's powerful drive from Juan Mata's through ball was kept out by the face of Foster. United substitute Jesse Lingard also volleyed wide of goal.
Not for the first time this season at Old Trafford United started sluggishly and could have been a goal down after 12 minutes. "We were masters in complication".
"We couldn't play fast, we couldn't think fast, everything was complicated, " he said.
Against West Brom, however, it was down to the home side to set the pace in front of their own fans, to establish a dominant pattern in the game.
Because of goal difference, United realistically needed to win all of their six remaining games and hope City lost their last five matches.
Mourinho was asked whether he took off Pogba because he had a yellow card and was at risk of getting sent off. "It's one of those days that we didn't play good enough and we tried to create some chances in the first half and in the beginning of the second, but we didn't play quickly enough".
'City were the best team, sooner or later they would get the points, so no dramas when the best team wins the league'.
It was Arsenal's fifth consecutive away defeat in the Premier League. At last, Manchester City's players can enjoy a serene Premier League title triumph.
When his first touch wasn't heavy, he found Ben Foster an impenetrable barrier as the West Brom goalkeeper produced impressive saves from Lukaku in each half.
"You can't take it for granted", he told Sky Sports on Sunday. Winning titles in every league is important, with Barcelona was special.