Businessman Vijay Mallya today offered to pay Rs 4,000 crore by September this year to a consortium of banks, led by the SBI, against an outstanding loan of Rs 9,000 crore. Mallya offered to pay Rs 2,000 crore upfront and remaining Rs 2,000 crore by September end .Mallya's offer was made in the Supreme Court by his counsel C S Vaidyanathan. But his counsel remained silent on the issue of whether Mallya intended to return to India from London or not. The SC allowed the consortium of banks to respond within a week's time to Mallya's proposal and posted the matter for hearing on the 7th of next month.Mallya had left India on the 2nd of this month, presumably for London, days before the Supreme Court heard a plea of clutch of state-owned banks seeking recovery from his group firms. Mallya has also been summoned by Enforcement Directorate (ED) to make a personal appearance before its investigating officer in Mumbai on the 2nd in connection with its money laundering probe in the over Rs 900 crore IDBI loan fraud case.