Manuel Pellegrini let rip at underperforming West Ham players in the dressing room following their League Cup humiliation on Wednesday night, Football Insider can reveal.

The normally mild-mannered Chilean laid into his rejigged side that were thrashed 4-0 at Oxford United, who are 12th in League One.

A West Ham source with knowledge of the post-match inquest told Football Insider how Pellegrini accused the players of letting him down and told them they now had a lot to prove to him.

The 66-year-old was absolutely seething in the aftermath of the cup embarrassment, and sent the air blue with his tirade at a team featuring nine changes from the one that secured an outstanding win against Manchester United last weekend.

Pellegrini publicly took responsibility for the humiliation, but made the players well aware of how they had let him and the club down at the Kassam Stadium.

The Hammers are flying high at fifth in the Premier League, but Karl Robinson’s side swept them away to progress into the fourth round for the first time in 22 years.

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Pellegrini had rested many of his big guns on Wednesday night, with first-team stars Sebastien Haller, Felipe Anderson, Mark Noble and Lukasz Fabianski on the bench.

The likes of Declan Rice and Ryan Fredericks, who have started all six of the club’s Premier League matches this season, were given the night off.

In other West ham news, it can be REVEALED that Arsenal have granted permission for an attacker to head to the London Stadium.