Chelsea boss Maurizio Sarri has advised his players to play with full concentration when they lurk horns with Jose Mourinho’s Manchester United on Saturday.

The Red Devils are yet to grab a result at Stamford Bridges since Jose Mourinho replaced Louis Van Gaal at the helm of affairs.

With Eden Hazard’s form and the current stats, Manchester United will be trying to stop the Blues from playing when the meet on Saturday afternoon.

And Sarri cautious of the game, has demanded concentration from his players.

Blues boss Sarri said: “We need to expect everything because we have to play against a very strong team, and usually a very strong team play very well in important matches.”

Sarri avoided the topic of Mourinho’s negative football approach which he deploys against stronger oppositions.

“The problem is not the way of football, if I like it or not,” Sarri added. “The focus is he is able to win. He has won everything everywhere, so probably that means he is right.”

The Blues have only lost once in the current football season with the community shield defeat to Manchester City as their only loss. Manchester United have struggled for consistency in the current season, with the Red Devils losing to both Brighton, Tottenham and West Ham in the current league season.

But Sarri not influenced by the bad fortunes surrounding the Red Devils insist that the Manchester club has the strongest squad in the league.

“They are a very strong team. Maybe player by player they are the best team in the Premier League,” Sarri said. “At the moment I think City is better like a team, but player by player they (United) are very, very strong.”

Sarri went on to identify Mourinho as one of the best football tactician in the world.

He said: “You are talking about one of the best coaches in the world – and I’m not at the moment one of the best”.“I think he will be able to win also in the future. Because he is really one of the best.”