The report, which will be finalised and submitted to the England and Wales Cricket Board next month, has been commissioned by a working party mainly comprising administrators from the Test match grounds.
According to The Telegraph, the report entitled 'Building a Stronger Future for the Domestic Game', states: "Without corrective action there is a looming risk of CAVs [Category A Venues] facing financial difficulties and maybe even insolvency.
"The current arrangement for allocation and pricing of rights to stage major matches are unsustainable and a new commercial relationship between ECB and CAVs is required.
"An alternative cricket competitions calendar that creates an exclusive window for T20 cricket can generate significant commercial and other advantages. There is an opportunity to explore the value of a new competition that generates value for all 18 FCCs [first-class counties] and the whole game. We need a long-term plan to build a stronger future for the domestic game."
The report estimates that, based on current broadcasting models, a new 10-team Twenty20 league could be worth £34 million. Sponsorship income could also rise by £9 million to £10 million and match-day income would double to around £14 million based on average attendances of 15,000.
