text: (3)A councillor who—(a)is returned at an election the poll for which is held on the ordinary day of election in 2021, and(b)fills a vacancy arising as a result of the expiry of a term of office extended under subsection (2),is (notwithstanding section 7 or 16 of the Local Government Act 1972) to retire on the fourth day after the ordinary day of election in 2024; and the councillor's term of office is reduced accordingly.