Transfer Deadline Day - exact time Newcastle United must complete business by and who might come in

The final hours of the summer transfer window are upon us as Newcastle United and Premier League clubs buckle in for a blockbuster Deadline Day.

The close of the window is always like Christmas Day for football fans and, after the huge sums of money exchanged this summer, nothing seems off the cards when it comes to drama and big moves.

Newcastle United have completed much of their business already but fans will no doubt be hoping for one more exciting addition before close of play on Friday.

NewcastleWorld has all you need to know about Deadline Day timings, what has happened at St James' Park and what may still happen.

When does the summer transfer window shut?

It's been over two months since the summer transfer window opened for Premier League clubs on Wednesday, June 14 and hundreds of millions of pounds have been spent in that time.

The transfer market will slam shut on Friday, September 1 at 11 pm.

Windows across Europe's biggest leagues all align with the same deadline date, although can vary in time. Regardless of when those windows close, Newcastle United can complete incoming deals abroad up until the Premier League deadline.

Who have Newcastle United signed so far and how much has the club spent?

It's been a busy summer of incomings at St James' Park with Eddie Howe looking to bolster his squad to once again challenge for the top four, as well as fighting in the Champions League.

The first piece of business the club did was to bring in 19-year-old Gambian prospect Yankuba Minteh. A signing for the future, the winger was then loaned to Eredivisie champions Feyenoord for the season.

AC Milan midfielder marauder Sandro Tonali was next through the door for a hefty £55 million. The Milan golden boy has already impressed in black-and-white and looks to be a bargain with fees of over £100 million being agreed for other top flight defensive midfielders this summer.

A winger was also on Howe's shopping list and Leicester City man Harvey Barnes jumped at the opportunity to return to the Premier League on a £38 million deal and has already been among the goals.

Two young defenders in Tino Livramento from Southampton and Lewis Hall from Chelsea have also been added to the ranks for £32 million and £28 million respectively.

Will Newcastle United sign more players on Deadline Day?

Newcastle United moved early to complete their most important pieces of business this summer and look unlikely to have as busy a Deadline Day as other Premier League clubs.

Eddie Howe still has a rather large squad at his disposal so some outgoings could be pushed through in the final hours of the window.

Notably, the Magpies boss has long been linked with a move for a centre-back, which could now be even more important after Sven Botman picked up an injury niggle last weekend.

Recruitment in that position is yet to happen and rumours are rife, so a focus on bringing in a centre-back could be the case come Friday.