The EFL decided at its summer conference not to take up an automatic one year extension with Sky who have two years left on their current TV deal.
It means it will go out to tender next month with BT likely to rival Sky having already gone head-to-head in the Premier League and the EFL believing they can get a bigger deal.
The EFL extended their deal with Sky Sports in 2015, which enabled the broadcaster to show 148 live matches per season.
BT Sport will now look to add the Sky Bet Football League, Capital One Cup and Johnstone’s Paint Trophy to their portfolio of sport.
It could provide another blow to Sky after BT extended their rights for the Champions League until 2021 this year in a £1.2bn deal.