The Ireland international will appear on the second day of his trial at a Manchester magistrates' court.

Keane, 33, has been accused of grabbing his alleged victim by the neck while shouting in his face after the boy had insulted him. The teenager has also claimed Keane swung a punch at him, stopping inches from his face.

The teenager, who gave evidence via a video link on the first day of the trial, denied making the story up so he could go to the press or sue the multi-millionaire footballer.

The two clashed after the student rode his moped with a friend, aged 17, near Keane's 1.4 million pound house in Hale, Cheshire, last September, the court heard.

Keane was walking his dogs when the youngster beeped his horn at the star, but as he passed Keane swung out with a stick he used while walking his dogs, the court heard.

The 6ft 2in teenager drove past, turned round and made an obscene gesture with his hand towards Keane.

Weeks later the youngsters, who cannot be named for legal reasons, were on their mopeds again near Keane's home and the footballer confronted the youngster.

He alleged Keane confronted him after overhearing an obscene remark, grabbing the teenager's shirt.

Keane was later was later arrested and charged.

Keane denies the charge of criminal damage for snapping the youngster's 2.99 pound silver neck chain. He also denies common assault and a public order offence.