The Football League decided to reaffirm their commitment to the delay on Friday after it emerged the Premier League had not agreed to any change in their calendar.
The Olympics will conclude in the capital on Saturday August 12 2012, the same day the top flight football season is due to start. The Football League will start on Saturday August 18.
Bristol City have wrapped up the signing of midfielder Kalifa Cisse from Championship rivals Reading.
The Mali international, 26, has signed a two-year contract at Ashton Gate, having previously worked with new Robins boss Steve Coppell at the Madejski Stadium.
Coppell told the club's official website: "Every signing you make as a manager is a gamble. You hear so many tales of a player going somewhere and that it didn't quite work out.
"I've put the odds more in my favour, because I've signed a player I know and one I've bought before. I'm delighted he's accepted the chance to come here and begin a new challenge."
Leeds United have signed the winger Lloyd Sam on a free transfer from Charlton Athletic, where he was out-of-contract.