In a statement released by EFL, Trevor Birch said: "Whilst the fixture calendar remains a shared asset across the EFL, Premier League and Football Association, additional pressures from revamped European competitions means that scheduling across the season remains challenging and complex, so it requires a whole game response to find a solution.
“As it stands there is no agreement in place to make any changes to the Carabao Cup’s two-legged semi-final format, which continues to provide significant financial benefit to EFL Clubs.
"The League remains committed to a review of the calendar, but any significant changes cannot be made unilaterally, and would need to come with significant levels of compensation and be adopted as part of any new distribution deal with the Premier League and its Clubs.”