The mother of Oasis frontman Liam Gallagher's lovechild is demanding $ 670,000 per year from the rocker, as she bids to capitalize on his band’s money-spinning reunion .

RadarOnline.com can reveal the British singer’s lawyers tore into Liza Ghorbani's demands at a court hearing on Monday, claiming there was no reason why Gallagher should pay the "extreme expenses." Article continues below advertisement

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Ghorbani wants a new agreement with Gallagher, 52, about their 12-year-old daughter Gemma, who has autism .

New York 's Supreme Court was told he has paid more than $1million since a 2015 court order.

He later agreed to pay $240,000 towards Gemma’s school and autism-related expenses after being informed of her co

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