For a list of confirmed transfers, check out the transfers page.
Chelsea midfielder Juan Mata could leave the club on loan in January, with Juventus and Atletico Madrid keen on the 25-year-old Spain international.
A deal for Manchester United to re-sign Cristiano Ronaldo remains a possibility and could happen after the 2014 World Cup.
United defender Patrice Evra, 32, looks set to be offered a £150,000-a-week deal by both Paris Saint-Germain and Monaco in the summer.
Arsenal boss Arsene Wenger could opt for a lower-profile alternative to the likes of Real Madrid's Karim Benzema and Aston Villa's Christian Benteke by moving for Getafe's Romania striker Ciprian Marica, 28, in January.
West Ham are believed to be eyeing a move for ex-Manchester City striker Felipe Caicedo, 25 who now plays for Lokomotiv Moscow.
France midfielder Yann M'Vila, 23, currently with Rubin Kazan in the Russian Premier League, sparked transfer rumours after being spotted in the Liverpool section at the Merseyside derby.
Portuguese left-back Fabio Coentrao, 25, has dealt a blow to Tottenham and Manchester United by agreeing to stay at Real Madrid.
David Moyes has suggested that midfielder Ryan Giggs, 39, will be offered a new one-year deal at Manchester United.
Meanwhile, United defender Rio Ferdinand, 35, says he is considering retiring at the end of the season.
Aston Villa boss Paul Lambert has increased the rivalry ahead of Monday night's derby showdown at West Bromwich Albion by declaring: "Aston Villa is a bigger club."
West Brom manager Steve Clarke wants to stay at The Hawthorns after his current deal expires at the end of the season.
Argentine defender Federico Rosso has shown off his multi-tasking skills - after taking out two strikers in one challenge.