FRANK LAMPARD has warned old side Chelsea

FRANK LAMPARD has warned old side Chelsea that Jose Mourinho will be expecting nothing less than victory when Manchester United visit on Sunday.

The Special One returns to Stamford Bridge for the first time following his exit last December and will be desperate to get one over his former employers.

It will be Mourinho's first time back at Stamford Bridge following his exit last year

And new boss Antonio Conte will be hoping his new 3-4-3 formation continues to do the business following successive wins against Hull and Leicester, even though captain John Terry is set to miss out with a new injury problem.

But Lampard believes United and Mourinho will be going all-out for the three points this weekend as they look to keep pace in the title race, and has urged Chelsea not to drop their guard.

The former England ace told Sky Sports: “Jose Mourinho’s a winner. I’ve worked with him and against him and he wants to win games, none more so than when it’s a big competitive game like this.

Frank Lampard reckons Mourinho will be going all-out for the win

Antonio Conte will have to be at his very best to out-smart Mourinho

“He’ll be very aware of the history and I’m sure he’s still got a huge feeling for Chelsea from his time at the club.

“On the other hand he’ll be working hard on his team to get them organised to get the right result at Stamford Bridge.

“I expect nothing more from a passionate man on the touchline and an organised Manchester United side will give Chelsea a very tough game.”

Lampard played in many games between Man Utd and Chelsea

Chelsea fans won't give Mourinho the red carpet treatment in west London

Reflecting on his own experiences in the clash, Lampard added: “I have great memories. Chelsea v Manchester United is always a huge game.

“Generally, during my time at the club, both clubs were fighting for the title so it was always a passionate game, a difficult game because they’ve always had great players and I think we had a lot of success against them at the time.

“It was a game I always looked forward to and I’m looking forward to watching it this weekend before we [New York City] play because, especially at Stamford Bridge as Chelsea players, there’s always a huge atmosphere around it.

“There’ll be an added dimension with Jose Mourinho going back so it’s a huge game. It will be even bigger with the extra ingredients the game has now.”