For a list of confirmed transfers, check out the transfers page.
Manchester United target, 21-year-old Spanish midfielder Koke, is unwilling to leave Atletico Madrid in January.
Cardiff City boss Malky Mackay wants three new players in January. He is looking for a defender, midfielder and an attacking player to improve the spine of his team.
Arsenal right-back Bacary Sagna, 30, is not ready to commit to a new deal at the Emirates.
Fulham striker Bryan Ruiz wants to join Anderlecht in January to improve his chances of regular football ahead of the World Cup. The Costa Rican, 28, has started just seven league games this season.
Fulham are hoping to sign former forward Clint Dempsey on loan during the MLS close season. West Ham and Stoke also want the American, 32, who left Tottenham for the Seattle Sounders in August.
Tottenham chairman Daniel Levy is already sounding out replacements for coach Andre Villas-Boas after his team's humiliating 5-0 defeat by Liverpool.
West Brom will target Molde manager Ole Gunnar Solskjaer as they look to replace Steve Clarke.
The Baggies could also move for Real Madrid assistant manager Paul Clement.
Former Manchester United assistant manager Mike Phelan is also on West Brom's shortlist, along with Solskjaer, Clement, ex-Baggies player Martin Jol and Michael Appleton.
Watford boss Gianfranco Zola is on the brink of parting company with the club after losing their last five games at home.
Tottenham defender Benoit Assou-Ekotto posted a picture of him and Spurs forward Emmanuel Adebayor on Twitter in apparently good spirits after watching their side lose to Liverpool.