League bosses decided to shift the deadline from 11pm on Tuesday 1 September to 5pm the same day.
In doing so, they avoid a clash with UEFA regulations that stipulate Champions League squads must be handed in by 11pm that same day.
Moving the deadline will greatly help the quartet get their transfer activity completed and leave them a few hours to arrange their European squads.
Manchester City - Deadline Day Signings
Chelsea, Arsenal and City earned automatic qualification for the Champions League group stage after finishing in the top three of the Premier League last term.
But United must navigate through a tricky playoff round where they face the prospect of meeting Lazio, Monaco, Sporting Lisbon or CSKA Moscow in a double header in August.
The transfer deadline is famed for throwing up last-minute deals, with United signing Dimitar Berbatov for £30million back in 2008 hooking TV viewers to their screens.
Robinho switched to City in much the same manner, while Andy Carrol was bought by Liverpool for £35m in 2011.
Last summer, United signed Radamel Falcao and Daley Blind on deadline day, while they sold Danny Welbeck to Arsenal.
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