From Kylian Mbappe to Dan James and Ruben Neves, the transfers to look out for on deadline day involving Chelsea, Manchester United, Real Madrid and Arsenal

It's transfer deadline day and there are still many deals to be completed and plenty of drama to unfold.
Arsenal are looking to move players out of the door and Man United fans really want the club to sign a defensive midfielder, though they will have to make room in their squad first.
It has arguably been one of the best transfer windows in years with many of the biggest names in football moving to new clubs.
Cristiano Ronaldo has agreed a deal to rejoin Manchester United, with Juventus confirming the fee to be an initial €15million, plus a potential further €8m in add-ons.
One of the game's other legendary players, Lionel Messi, has also moved this summer, leaving Barcelona for Paris Saint-Germain, while Manchester City smashed the British transfer record to make Jack Grealish the most expensive English footballer ever in a £100 million deal.
As the clock ticks down for players to seal a late move, marvelbet369.com looks at who else could be playing in new club colours after the 31 August deadline...
The France superstar has been in the capital since signing from Monaco in 2017 and is in the final year of his contract.
He has told PSG he is not going to sign a new deal despite being made numerous offers and wants to join Real Madrid.
Real have already tested PSG's resolve with two bids, the first for an initial €160m (£137m) and the second of €180m (around £154.4m).
The Spanish giants are reluctant to up that offer when they can sign Mbappe on a pre-contract agreement in four months.
But with Mbappe desperate to go, they could make another late attempt to secure his services now.
James is the man to make way for a potential deadline day signing at Old Trafford.
The winger, 23, is on his way to Leeds in a £24m move, two years after his move to Elland Road collapsed at the last minute.
It means Jesse Lingard is likely to stay at Old Trafford.
Following the summer arrivals of Jadon Sancho and the return of Ronaldo, plus the form of Mason Greenwood and Bruno Fernandes, Lingard's game time appears limited.
However, manager Ole Gunnar Solskjaer is going to rely on him ahead of what will be a long season for the club as they juggle European and Premier League football. Lingard is out of contract in 2022.
Lyon's number 8, Aouar has been subject of numerous interest from varying clubs for the last few seasons with Arsenal heavily interested in the midfielder's services.
Transfer guru Fabrizio Romano reported he has been offered to both Tottenham Hotspur and the Gunners and he could yet seal a move to either north London club in the remaining time left.
He could also prove to be a real bargain as he is apparently available for a fee as little as £21.5m as he has entered the final two years of his contract.
With that being said, Spurs have said that he is not a priority which could pave the way for their rivals to secure the deal.
Another one who could be best suited for a move away from their boyhood club is Chelsea winger Hudson-Odoi.
Several outlets have shown one club to be seriously interested in the player and that is Bundesliga giants Borussia Dortmund.
Following their loss of Jadon Sancho to Manchester United, a move for Hudson-Odoi makes a great deal of sense as they look to fill the void the former winger created.
A loan offer has reportedly been tabled by Dortmund and the player is keen on the move, however there are still complications in the deal as Chelsea are undecided whether to keep him or not.
Additionally, Leicester are a Premier League side said to be keen.
Should Mbappe leave the Parc des Princes, Brazil forward Richarlison has been tipped to leave Merseyside for Paris.
Of course the move is highly dependant on the Frenchman's departure to Real Madrid, but should a deal be agreed, then manager Mauricio Pochettino could make a move for the Everton forward.
The Merseyside club have reportedly placed an £85m price tag on his head as they look to make a substantial profit since signing him from Watford in 2018 for an £35m with the fee potentially rising to £50m.
Richarlison was also furious on the weekend after the ball was taken off him when he wanted to step up to take a penalty against Brighton instead of regular designated spot-kick taker Dominic Calvert-Lewin.
Having been linked with a move away from La Liga champions Atletico Madrid all summer, Trippier could still yet leave the Spanish capital.
A move for Trippier could make a great deal of sense for manager Mikel Arteta as the club look to rectify that issue in their defence.
Hector Bellerin has been injured and the club seemingly wants to move him on and he is keen on a departure.
Should he leave, it could pave the way for the former Spurs defender to arrive back into north London despite him being linked to a move to Manchester United for the majority of the window.
'Sign a DM' was trending on Twitter on Monday evening and there are signs that Wolves will let 24-year-old midfielder join Manchester United.
He was an odds on favourite on the morning of deadline day to complete a last minute move, which could be made easier by the fact compatriot Renato Sanches is en route to Wolves.
If a move for Cristiano Ronaldo can be rattled through quickly then this should be no problem, right?
The Blues will try and sign the defender one more time.
Chelsea have been chasing the Sevilla centre-back, who can also play full-back, all summer.
It seems the goal posts have been moved a few times by Sevilla, who are holding out for £60million.
This is set to go to the wire, though a deal for Atletico Madrid man Saul to move to Stamford Bridge is off it seems.