It is close to being another record-breaking year of summer spending - and a new high could still be reached on Transfer Deadline Day. But when are all the deadlines, what rules must clubs comply with, who are some of history's most iconic deadline-day signings - and which moves could still happen? Here is all you need to know about deadline day - and how you can keep across the action.
Premier League and EFL clubs have until on Tuesday, 1 September to complete their transfers. The deadlines for other leagues around the world are: Scottish Premiership: Thursday, 3 September - 17:00 Women's Super League: Thursday, 3 September - 23:00 Saudi Pro League: Sunday, 6 September - TBC Fifa rules state a transfer window cannot last more than 16 weeks in a calendar year. A deal sheet must be completed by Premier League clubs in the last two hours of a transfer window.
This year, the earliest it can be submitted is , and must be complete before the 23:00 deadline - giving clubs two hours to finalise required paperwork. Without all paperwork submitted before 23:00, transfers cannot proceed. Clubs often leave their transfer dealings to the last minute, and therefore have to submit the form to the Premier League to make sure a move can go ahead.
The deal sheet allows a club to confirm an agreement has been reached and also give themselves more time to submit the remaining documentation. Players who remain free agents after the closure of the transfer deadline can be signed at any point. They won't be able to play for their new side immediately - unless there is space in the club's registered 25-man squad - as they have to wait until the next period of registration to come around.
While there is no official deadline that is made public, it is understood the deadline is about a week after the window closes. A Premier League squad list must not contain more than 25 senior players. This list is published for each club following the closure of the transfer window.
Of those maximum 25 players, no more than 17 can be registered that are not classed as 'homegrown' talent. As the 25-player rule only applies to senior players, any squad members under the age of 21 at registration cut-off do not count towards the total tally - meaning clubs can register as many under-21 players as they want. But clubs must otherwise carefully manage the numbers of senior players on the books, or some will be contracted to a team they cannot play for.
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