How Arsenal, Chelsea and Tottenham can still sign players after transfer deadline passes

Transfer deadline day is renowned for late deals as Premier League clubs scramble to complete their business with plenty of twists taking place throughout the day. Chelsea, Arsenal and Tottenham have all had chaotic deadline days in the past with some transfers paying off — and some going terribly wrong.

The deadline for Premier League clubs to complete their transfer business is 11PM (UK time), meaning clubs face a limited time to complete incoming and outgoing deals, with the complications of last-minute business causing stressful days behind the scenes at clubs around the world.

However, some announcements of big transfers are regularly made after the 11PM deadline has passed. 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.

So, what is a deal sheet? football.london has 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.

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 that allows for snags in a process that can have multiple stakeholders and often lots of moving parts.