The transfer window is narrowing - due to close in the next two hours. So how are London's clubs faring? Find out here.
Chelsea got their Premier League campaigns off to a winning start. The full match report here.
The pros and cons if Mourinho returns to Chelsea.
Mark Gower (Swansea, free)
Richard Wood (Coventry, free)
Marvin Sordell (Bolton, loan)
Simon Church (Reading, free)
Salim Kerkar, Yado Mambo, Matt Taylor (all released)
Bradley Wright-Phillips (New York Red Bulls, free)
John Sullivan (Portsmouth, free)
Scott Wagstaff (Bristol City, free)
Danny Haynes (Notts County, free)
Ricardo Fuller (Blackpool, free)
Michael Smith, (AFC Wimbledon, loan)
Kevin Feely (Carlisle, loan)
Danny Hollands (Gillingham, loan)
Press Association Sport understands that Arsenal have made a bid to sign Demba Ba, but they face competition from other clubs for the Senegalese striker's signature.
It is understood that interest from West Ham and Newcastle has cooled recently, but other clubs are still in for the 28-year-old.
Although Wenger may be sitting on a £70m warchest, he insists the club will not be held to ransom as the last-gasp shopping dash begins.
"I am not against spending. I am ready to pay what we can afford, even if it is a bit over the market (value) and as long as it is not crazy," he said.
Chelsea's Juan Mata could be eyeing a move to Paris, according to reports. It seems Paris St-Germain hope to open talks with Chelsea's 25-year-old midfielder, according to the L'Equipe website.
Tottenham have announced that they expect midfielder Etienne Capoue to be out for only four weeks because of an ankle sprain he suffered against Arsenal on Sunday
Arsenal have agreed a deal with Real Madrid to sign German midfielder Mesut Ozil in a move that would shatter their transfer record, Press Association Sport understands.
The 24-year-old is set to discuss terms over the proposed transfer, which is believed to be around 50million euros (£42.2m), and then look to complete a medical ahead of the 11pm transfer deadline.
The Gunners are also reportedly looking to bring in a couple more players before the summer transfer window closes.
QPR are reportedly taking enquiries from West Bromwich Albion over their Brazilian keeper Julio Cesar.
Talks between the clubs are believed to be at an early stage, but a loan deal could be on the cards.
Arsenal are hoping to sign Italian goalkeeper Emiliano Viviano on loan. The 27-year-old, from Serie B side Palermo, was one of the most promising keepers in the country before being put out of action with a torn ligament. He's struggled since to return to full fitness.
QPR have launched a bid to sign Tottenham's Tom Carroll and Benoit Assou-Ekotto on loan, according to reports from Press Association Sport.
Left-back Assou-Ekotto is out of favour at Tottenham and is yet to feature in any of the club's games so far this season.
Carroll, meanwhile, has seen his first-team opportunities diminish following the £100 million spending spree that has seen midfielders Christian Eriksen, Erik Lamela, Etienne Capoue and Paulinho arrive at White Hart Lane.
Former Spurs boss Harry Redknapp now wants to be reunited with the pair as he aims to take his new club back in to the Barclays Premier League.He faces stiff competition for Carroll, though, as two top-flight clubs are understood to be interested in taking the England Under-21 international on loan
Redknapp has also been linked with a move for Tottenham striker Emmanuel Adebayor, but it is understood that the west London club have not made a bid for the Togo striker due to his huge wages.
Crystal Palace manager Ian Holloway has not been slow in strengthening the squad since winning promotion against Watford at Wembley, with Reading winger Jimmy Kebe becoming the Eagles' 11th summer signing at the weekend
Royals defender Adrian Mariappa is reported to be on the verge of completing his transfer to south-east London, while Arsenal's Nicklas Bendtner is another linked, although the Denmark striker's wage demands could yet be an issue.
Speaking after the win over Sunderland, Holloway said:
"We are going to smash some things and the chairman and the other directors really want to have a go... It takes a really big squad in this division to have a chance so hopefully we can add four or maybe five by Monday."
Crystal Palace have confirmed the signing of defender Jack Hunt from Huddersfield on a four-year deal for an undisclosed fee.
The 22-year-old came through the Terriers youth system and gained regular experience in the Championship.
Hunt is set to add much-needed cover for Ian Holloway's side, who recorded their first Barclays Premier League win on Saturday by beating Sunderland 3-1 at Selhurst Park.