Jose Mourinho admits Paul Pogba needs to show much more consistency in his performances and has challenged the midfielder to maintain the form that saw him nearly single-handedly dismantle Manchester City last week.
They clinched the silverware 24 hours later thanks to Albion forward Jay Rodriguez's 73rd minute header at Old Trafford.
With 87 points from 33 matches, City win their first Premier League title since 2013-14 under Manuel Pellegrini and their third since being bought by the Abu Dhabi United Group in 2008.
The Citizens had their fate in their own hands last weekend, but gave up a 2-0 lead at home to Manchester United, eventually losing 2-3, meaning they would have to wait for at least another eight days before being crowned champions.
And that decision backfired as United players supposedly said: "Booked tables have you?"
City won 3-1 against Tottenham at Wembley on Saturday to move to the brink of glory, but United's shock home loss to the league's bottom side wrapped up the trophy they have seemed destined to lift since the start of an all-conquering campaign.
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Pogba wasn't the only one Mourinho wants to be more stable, as he also told his critics to support him and his team after good performances just as readily as they bash United after poor ones.
United now find themselves sat 16 points behind City with four games to go. "Eight titles are eight titles and three Premier Leagues are three Premier Leagues".
Guardiola's side have only dropped points against Burnley and United since the New Year, while marching into an explosive Champions League quarter-final with Liverpool that saw them knocked out earlier this month.
"They won the title because they were the best team". That's Liverpooling more than Liverpool have ever Liverpooled this season.
"He annoys me, because I know he's capable of a hundred times more", said Christophe Dugarry, a striker in France's 1998 World Cup-winning side, this week. "Everyone is disappointed. We didn't play well at all and it's a bad afternoon for us".
I don't think we deserved to lose, but we gave the opportunity to win the match.
"This is not a dynasty, it is one title we've won".