What is a deal sheet? How Arsenal, Chelsea and Tottenham can sign players after transfer deadline

Transfer deadline day is known for late drama and this year is expected to be no different as several Premier League clubs try to push through last minute deals.

With the window slamming shut at 11pm, there is limited time to complete transfer business, with the complications of last-minute business causing stressful days behind the scenes at clubs around the world. Such are the difficulties of completing business, deals can often be pushed close to the deadline and announcements of big transfers are regularly made following the 11pm cut-off.

Deals for the likes of Chelsea midfielder Conor Gallagher to Tottenham may be pushed right up to the end of the window, with this situation meaning that a deal sheet may be utilised to allow extra time to complete all paperwork. For instance,Enzo Fernadez's then-British-record Chelsea arrival in January was announced after the closing of the window, with a deal sheet a key component in such instances.

What is a deal sheet? Here is everything you need to know:

This piece of paperwork allows clubs to prove that a deal had been agreed between both clubs and means that the relevant governing bodies, such as the Premier League can ratify the transfer and allow the player to be registered.

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This allows clubs to be granted 'extra time' to get the deal done — but this can only be submitted between 9-11pm. Should a deal sheet be submitted in this two-hour period, all the documentation must be fully completed in order for it to be allowed.

This gives clubs an extra two hours to get a deal done and is a system which allows for snags in a process which can have multiple stakeholders and often