"The players are aware and there will be no let up from our side with a massive game coming up".
And while Walker admits to wanting Liverpool to win the competition, he is gutted City will not get the chance. But Mourinho's team produced a stunning comeback to win the game 3-2 and put their rival's celebrations on hold.
Click through the gallery above to see images from United's defeat at the weekend!
City could still finish the season with the most points, goals and wins from a single Premier League campaign.
City manager Pep Guardiola might have rubbed his eyes in disbelief at events at Old Trafford when he returned from his round of golf with his son.
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. All the lads have done so well and it feels great to be a part of this really special group of players! "So happy to be able to share another trophy with our fantastic fans!" tweeted City's captain Vincent Kompany.
Jay Rodriguez's second-half victor meant City securing the league title with five games to spare.
Winning the title with five matches to go makes City the joint earliest champions in the Premier League era - matching the achievement of the 2000-01 Manchester United team. Thoroughly deserved and won with a style of football that is truly joyous to watch.
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"We were masters in complication, everything was complicated", Mourinho said during his post-match interview. There was no fluidity.
"I saw lots of people in the moon because we won against City".
Mourinho was less than thrilled with midfielder Paul Pogba's performance, removing him before the hour for Anthony Martial under the guise of making sure the France worldwide did not pick up a second yellow card.
The Red Devils won the Europa League and League Cup in Mourinho's first season in charge at Old Trafford last term. "I believe in myself".
Henry, who implored him to emulate his City performance on a more consistent basis, said that such displays prove he can not.
This frank assessment from the Portuguese manager tells you everything you need to know about United's performance - a laboured, lacklustre loss of both the match and the title.