How two transfer deadlines could still wreak havoc for Premier League clubs

The Premier League transfer window slams shut on Friday evening - with the likes of Chelsea, Manchester United and Liverpool hoping to get their business done by then.

The official closing time of the window is at 11pm UK time for English clubs, although deals can still be finalised after that deadline provided the relevant paperwork is submitted in time.

In past years, we have seen deals announced in the early hours of the following day post-deadline - meaning the official deadline doesn't quite spell the end of the story.

That last sentence will be in even sharper focus this season, with two transfer deadlines in particular potentially sparking chaos for top Premier League clubs.

Here's how they could still play a major role.

How transfer deadlines could have big impact on Premier League clubs

The most significant deadline for top flight clubs is that of the Saudi Pro League.

Their window shuts on September 7 - giving the league an extra six days to recruit new players.

The Saudi Pro League is continuing its efforts to sign Liverpool star Mohamed Salah for Al Ittihad, and saw a bid totalling £150 million turned down by the Reds this morning. According to reports, they will return with another bid that could reach £200 million.

You can guarantee that clubs will continue testing the waters of the Premier League market up until the deadline, having already signed the likes of Fabinho, Ruben Neves and Aleksandar Mitrovic so far this summer.

The other deadline that may be of note to English clubs is in the Turkish Super Lig. Their window runs until September 15 - giving them plenty of time to secure deals.

And while that may not be as pressing a concern as the Saudi Pro League, there are still potential moves to be completed.

According to journalist Burhan Can Terzi, Galatasaray are interested in signing Arsenal midfielder Albert Sambi Lokonga, with the deal not needing to be finalised today.

But crucially, any players who leave for Saudi Arabia or Turkey after Friday cannot be replaced by Premier League clubs meaning this transfer window could have yet more drama in store.