Jose Mourinho's United team had needed to win against West Brom to keep the title race alive but surprisingly lost at home as Jay Rodriguez's header gave the league's bottom side a 1-0 win at Old Trafford.
Their squad is crammed full of wonderfully potent performers such as Juan Mata, Paul Pogba, Romelu Lukaku and Alexis Sanchez, yet the Premier League table, which shows them 16 points behind City, does not lie.
Former Manchester United defender Nemanja Vidic on Sky Sports: "They deserve the title, they played really good football for the whole year".
Manchester United looked to be heading for an embarrassing loss to the Citizens after first-half goals from Vincent Kompany and Ilkay Gundogan. Two points separate the teams and Arsenal's focus is now on winning the Europa League to qualify for next season's Champions League.
"I don't", Mourinho said when asked if he has plans to bring in another striker.
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He won three league titles with Barcelona and twice lifted the Champions League trophy during his Camp Nou reign.
"Last season we finished sixth and this season we are going to finish I believe fourth, third or second - hopefully second - and next season we are going to try and improve but let's see what happens".
"I trust in my work, that is for sure - I have no reason not to trust", he said.
"I think United will win".
West Bromwich took the attacking initiative and were denied an early goal as David De Gea brilliantly saved Jack Livermore's curled shot in the 12th minute.
Lingard has been one of the success stories this season a United - on an individual level and for the manager - who has been able to get the best out of a player whose potential was largely untapped and undervalued. They have dropped a league-high 26 points from winning positions this season.
"Probably in our best period, where we were moving the ball better and the team was thinking faster, they scored the goal in the only way they could score a goal, which was in a corner or in a lateral free-kick".