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A busy few days of Liverpool transfer news has seen the Reds finally spring into action late in the window.

Sunday's stunning 4-0 demolition of Arsenal was followed up on Monday with the news that Liverpool had secured a club-record deal to l and Naby Keita from RB Leipzig - next summer.

That came hot on the heels of interest in Monaco's France international midfielder Thomas Lemar, with a move for Arsenal's Alex Oxlade-Chamberlain also in the pipeline.

It will be a hectic few hours for Anfield officials in the run up to Thursday's 11pm deadline, and clubs across the country are up against the clock to secure the deals they want.

However, Premier League clubs are crucially afforded an additional couple of hours worth of time to get those big deals over the line.

Here's how Liverpool can give themselves the extra breathing space should they need it come 11pm Thursday evening.

Submitting a 'deal sheet'

With the frantic, fast-paced nature of transfer deadline day, clubs sometimes run out time to conclude their deals in what is often a high-pressure and frenetic environment.

However, they are allowed to submit a 'deal sheet' to the Premier League which allows them additional time to finish their transfer business past the 11pm deadline.

(Image: Photo by Dan Mullan/Getty Images)

The Premier League website states: "For an 11pm deadline, the deal sheet cannot be used prior to 9pm and needs to arrive fully completed before the transfer window closes.

"Once the sheet arrives, clubs have got until 1am in which to submit the full paperwork. But if a club are looking to complete an international transfer, it still has to comply with the FIFA Transfer Matching System (TMS) deadline of midnight."

That means a 'deal sheet' can be sent to the authorities after 9pm to give a club until the early hours of Friday morning to secure the signature of a new player.

It could prove to be invaluable.

What does the Premier League do?

(Image: (Photo by Maja Hitij/Bongarts/Getty Images))

It's not just clubs who have busy evenings ahead of them on transfer deadline day - the Premier League are inundated!

Once transfer paperwork is received, it is checked against Premier League and Football Association rules, and in some cases, against FIFA's too.

Clubs will be contacted accordingly if clarification is needed, and the Premier League will then advise if a player is now registered to his new club or further documentation is needed.

"It does get busy," say the Premier League. "In one window recently, approximately 30 transfers came through in the space of an hour.

"Staff will not go home until everything is checked."

A busy day for the fax machines then?

(Image: Photo by John Powell/Liverpool FC via Getty Images)

Conventional wisdom suggests all clubs communicate to one another via the use of fax machines, with the slightly dated technology coming into its own on transfer deadline day.

That isn't quite the case in 2017, however. Transfer deadline day now has a much more digital-friendly feel to it.

The Premier League say: "The fax machine has now been retired but clubs have the option of sending desktop faxes and scanned documents via e-mail.

"If there is a problem and a club does not meet the 11pm deadline then the Premier League Board has the ability to either refuse the application or grant an application and, if thought necessary, impose conditions by which the club making the application and the player shall be bound."