South Yorkshire Mayor Oliver Coppard has pledged to fund the purchase of the airport should a CPO be successful, this is in addition to granting the funding requested by Doncaster City Council (£6.2 million in total, £3.1 from SYMCA) to fund a feasibility study.
https://southyorkshire-ca.gov.uk/new...Xj9l71LN2CFnPs
No mention yet of how much they are willing to stump up for the airport, presumably this would be based on their value of the land as an airport only which I assume would be challenged all the way by Peel L&P.