And since the convincing victory, Chelsea have grown from strength to strength in the Premier League.
United trail the Blues by 14 points in the table, with Mourinho’s sixth-placed extremely unlikely to catch them this season.
Ander Herrera was in the Manchester United team that was beaten 4-0 by Chelsea earlier this season
The game that we deserved to lose clearly was Chelsea
Herrera played the full 90 minutes in west London when Manchester United were destroyed by their rivals.
And the 27-year-old feels that match showed Chelsea have proved they are the best side in England’s top flight.
“The game that we deserved to lose clearly was Chelsea, so Chelsea so far has been the best team,” Herrera said.
“They are very compact. They are very difficult to beat and they have been clear in the things that they have to do.
Ander Herrera admits Chelsea have deserved to lead the way in the Premier League this season
De Gea, Herrera and Mata carpool to Old Trafford… in a Mini Cooper!
Wed, February 1, 2017
David De Gea, Ander Herrera and Juan Mata were driven to Old Trafford today by goalkeeping coach Emilio Alvarez… in a Mini Cooper!
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Three Manchester United stars were driven to Old Trafford today in a Mini Cooper
Antonio Conte is likely to lead Chelsea to title glory in his first season as manager
"I think they deserve to be first, to be honest.”
Herrera and his United team-mates will seek revenge when Chelsea visit Old Trafford on April 15.
In the meantime, the Red Devils turn their attentions to Watford this Saturday (3pm), while the Blues will aim to maintain their nine-point lead at the top with a win at Burnley on Sunday (1.30pm).