For a list of all the latest deals, check out the transfers page.
Chelsea are interested in Manchester United target Thomas Muller and see the Bayern Munich and Germany forward, 26, as a possible replacement for Spain striker Diego Costa, 27. (Daily Mirror)
Costa is expected to return to the Chelsea starting XI for the Premier League game against Bournemouth on Saturday despite making his frustrations clear at being dropped to the bench for the draw at Tottenham. (Guardian)
Chelsea are worried they will not be able to return on-loan striker Radamel Falcao, 29, to Monaco in January as the French side are reluctant to recall the Colombia international. (Daily Mail)
Manchester United midfielder Ander Herrera, 26, wants talks with manager Louis van Gaal after becoming disillusioned at Old Trafford. (Daily Star)
United's hopes of luring Real Madrid forward Cristiano Ronaldo back to Old Trafford have been boosted by his mother Dolores, who would prefer the 30-year-old to return to the club he left in 2009. (Daily Mirror)
Manager Arsene Wenger has revealed that in 2014 Arsenal just missed out on a deal to sign 19-year-old French winger Kingsley Coman, who is currently impressing on loan at Bayern Munich from Juventus. (Evening Standard)
Arsenal are lining up a £22m January bid for Porto's 18-year-old defensive midfielder Ruben Neves, as cover for the injured Francis Coquelin. (Sun)
Stoke's England goalkeeper Jack Butland is not for sale at any price, says Potters boss Mark Hughes. (Daily Star)
Manchester United, Juventus and Barcelona will compete to sign Basel's 18-year-old Switzerland forward Breel Embolo in January. (Tuttosport - in Italian)
Brazilian striker Neymar's Ballon d'Or nomination has earned former club Santos £1.4m as part of the deal that took the 23-year-old to Barcelona in 2013. (Daily Mail)
Southampton want to sign England Under-21 winger Solly March for about £7.5m from Championship side Brighton. (Daily Mirror)
Tottenham and Arsenal both want to sign Paris St-Germain's France Under-21 midfielder Adrien Rabiot, 20, in the January transfer window. (Buzzsport - in French)
Newcastle boss Steve McClaren will have to sell before he can buy any new players in January, despite the club's position in the relegation zone. (Daily Telegraph)
Manchester City's Argentine defender Martin Demichelis, 34, whose contract expires in the summer, is planning to discuss his future towards the end of the season, but is likely to return to his homeland to finish his career. (Manchester Evening News)
Chelsea defender Branislav Ivanovic has backed team-mate Diego Costa to come back stronger after the Spain striker was dropped for the first time this season for the Blues' goalless draw at Tottenham on Saturday. (Times - subscription required)
Santi Cazorla and Alexis Sanchez have yet to be ruled out of Arsenal's must-win Champions League tie against Olympiakos next week because the club have not received medical assessments on the pair. (London Evening Standard)
Porto's Spanish goalkeeper Iker Casillas, 34, has not ruled out finishing his career in Major League Soccer in the United States.(Marca)
Best of 5 live
Former Leicester midfielder Robbie Savage says Manchester United should sign striker Jamie Vardy, who broke the record for scoring in consecutive Premier League matches at the weekend. Speaking on the Monday Night Club, the former Wales international said: "If I was Manchester United I would buy Vardy. He would offer pace." Listen here
Former Aston Villa midfielder Lee Hendrie is worried about the club's future if they are relegated from the Premier League. Speaking on the Monday Night Club, he said: "That's my fear - if they go down this year I think they'll find it very hard to come back up." Listen here
Best of social media
The wife of Manchester United reserve goalkeeper Victor Valdes has claimed on Instagram that he was not invited to the club's Unicef Gala Dinner at Old Trafford on Sunday night.
Manchester City defender Pablo Zabaleta has met Status Quo at the Manchester Palace Theatre leg of their European Tour. City posted on Instagram: "Zab meets his musical heroes!"
Sergio Aguero had some reassurance for Manchester City fans by tweeting: "For everyone asking, I'm fine. It's just a harmless bump on the heel. Thanks, all of you, for the support!"
Former Liverpool skipper Steven Gerrard has been back at the club's Melwood training ground and the Reds were delighted to tell their Twitter followers, even including a video of the moment.
Liverpool midfielder Lucas Leiva posted an Instagram picture of himself training with the Gerrard, with the caption: "Good to have you back my friend."
Former Liverpool midfielder Dietmar Hamann answered a Twitter appeal from 10-year-old Archie Palmer, who wanted a Reds player to visit his friend Myles Hemsley, who has been diagnosed with Leukaemia, in hospital.
France legend Zinedine Zidane was famously sent off for headbutting in the 2006 World Cup final against Italy and now his son, 17-year-old goalkeeper Luca, has suffered the same fate in Real Madrid's youth game against Atletico Madrid. (Sun)
Arsenal were unable to beat Norwich on Sunday but during the match their midfielder Santi Cazorla became the first person to complete 1,000 successful league passes this season. (London Evening Standard)