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West Ham will have police inside the stadium for their potentially explosive League Cup clash with Chelsea.

MirrorSport can reveal the Met have reached a compromise over their Airwave radio system and officers will be on duty within the London Stadium on Wednesday night.

It follows extensive talks between the Hammers, the police and the Football Association, because of security fears surrounding the London derby.

West Ham have had major teething problems since moving into the £700m former Olympic Stadium in the summer, and there have been a string of flashpoints at their home games this season.

(Image: REUTERS) (Image: REUTERS) (Image: Reuters)

The police refused to be routinely deployed in the stadium because the Airwave system - which is used by all the emergency services and many public safety organisations - had not been installed.

But a solution has been found, with a communication system now in place until the Airwave network is fully operational next February.

A Police spokesman told MirrorSport: “We have clear emergency plans with each stadium in London.

"When we are called to an incident inside a stadium, we will always deploy officers to assist in an emergency or where crime and disorder occur.

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“As part of this, we will ensure that there is suitable communication.

"Where there is full, in-building radio coverage, this is beneficial, but if there is not, appropriate tactical measures will be taken to meet operational communication requirements.”

The police insist officers will be on duty inside and outside of the stadium, and there are plans for extra precautions and stewarding around the fixture.

There have been major safety fears over the potential powderkeg fixture between the two local rivals and, as a result, West Ham have reduced the number of tickets on sale.

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They have also introduced a strict policy for both sets of fans so they must have a buying history before being allowed to purchase tickets.

It follows a co-ordinated plan among some fans to cause trouble with threats appearing online, both in supporter forums and on social media.

Some Chelsea and West Ham followers appear to be planning a return to the bad old days of orchestrated crowd trouble, and the FA and police are determined to come down hard.

The Hammers, despite effectively being tenants in the stadium, are responsible for the behaviour of their fans and are keen to stop any threat of violence at the Cup game.