Following consultation with the EFL, an additional domestic-only window will run from October 5 to 5pm on October 16.
During this window, Premier League clubs will only be able to trade with EFL clubs – either loans or permanent registrations – and cannot do business with each other or with foreign clubs.
There will be no winter break and the season is due to finish on May 15/16.
The final stages of the 2019/20 Scottish Cup will take place in the middle of the 20/21 season: semi-finals between Hearts and Hibernian and Celtic and Aberdeen have been scheduled for October 31 and November 1, with the final pencilled in for December 20.
The Community Shield will take place on Saturday August 29.
The match between Premier League champions Liverpool and FA Cup winners Arsenal will be played a fortnight before the scheduled start of the new domestic season on September 12.
The match will be immediately followed by an international break from September 2 to 10.
The new Premier League season is in touching distance with the fixtures for the 2020/21 campaign released on August 20.
The Premier League has confirmed the 2020/21 season will start on September 12 – just six weeks after the extended 2019/20 one finished.
Champions Liverpool will kick off the defence of their first Premier League title in a mouthwatering clash against promoted Leeds.