By Shamoon Hafez / BBC Sport: It's that time of the year again. The chaos of the winter transfer window is almost upon us as chairmen across the continent open their chequebooks, whether it's in search of the title, promotion, European qualification or just hoping to stave off relegation. BBC Sport assesses 50 possible moves that could happen in January.
GABRIEL AGBONLAHOR (29, striker) Aston Villa
Linked with: Ah Ahli, Al Wasl
It seems 'Gabby' is surplus to requirements at Villa Park under Remi Garde. With the club bottom of the table, it could soon be time to start preparing for life in the Championship next season. Agbonlahor could be the first of many to depart and be taken off the wage bill.
SAIDO BERAHINO (22, striker) West Brom
Linked with: Chelsea, Tottenham
Tottenham failed with four bids in the summer and the striker then tweeted he would never play for the club again. He has done, but things haven't been quite right ever since. Having completed just one full 90 minutes all season, his time at Albion could be up in January.
RADAMEL FALCAO (29, striker) Chelsea - on loan from Monaco
Linked with: Columbus Crew, Fenerbahce
After a failed loan spell at Manchester United last season, former Chelsea boss Jose Mourinho thought he could get the best out of the Colombian once again. He was wrong. Falcao has managed to find the net just once this season and the Blues could be looking to cut their losses early.
Victor Wanyama, Kevin Mirallas, Jamie Vardy, Andros Townsend
Victor Wanyama, Kevin Mirallas, Jamie Vardy and Andros Townsend - who will move in the transfer window?
DWIGHT GAYLE (25, striker) Crystal Palace
Linked with: Bournemouth, Norwich
The Englishman's hat-trick in the League Cup against Charlton in September looked to be the start of something special and his club have kicked on to challenge for a European place, but Gayle himself has failed to cement a place in the starting XI because of the form of Connor Wickham.
GOKHAN INLER (31, midfielder) Leicester
Linked with: AC Milan, Schalke
The superb form of midfielders N'Golo Kante and Danny Drinkwater has seen Inler's chances at the shock Premier League challengers limited to just seven appearances. The Switzerland captain may feel he needs regular football going into Euro 2016 and a loan move could materialise.
BOJAN KRKIC (25, striker) Stoke
Linked with: Chelsea, Liverpool, Manchester United
The Spaniard, who joined from Barcelona, has had an impressive return to Premier League action after an injury-hit previous season. Although he has netted just five this term, his runs and movement have been a handful for opposition defenders. Big clubs have been watching.
KYLE LAFFERTY (28, striker) Norwich
Linked with: Leeds United, Palermo
After leading Northern Ireland to Euro 2016 qualification, Lafferty needs minutes on the pitch to make sure he stays in the squad for the tournament. Out of favour at Carrow Road having made just one appearance this season, he may look to drop down a division for much-needed game time.
SADIO MANE (23, winger) Southampton
Linked with: Bayern Munich, Manchester United
The speedy Senegalese winger has been the star of a Southampton team that hasn't really hit top form so far this season. Having seen their best players such as Adam Lallana, Luke Shaw and Morgan Schneiderlin leave over the last couple of seasons, Mane may well be the next in line to leave the south-coast club.
KEVIN MIRALLAS (28, winger) Everton
Linked with: AC Milan, Marseille, Monaco
Mirallas has found opportunities limited at Goodison Park this season, particularly because of the fabulous form of Spaniard Gerard Deulofeu. With a European Championship taking place in the summer, the Belgian will be wanting as many minutes on the pitch as he can get. A temporary move may be on the cards.
DAVID OSPINA (27, goalkeeper) Arsenal
Linked with: Besiktas
Ospina was always going to play second fiddle when Arsenal signed Petr Cech in the summer. The Colombian hasn't played since their shock 3-2 Champions League loss at home to Olympiakos.
ANDROS TOWNSEND (24, winger) Tottenham
Linked with: Newcastle, Sunderland
The England international has been out-of-favour at the club this season and is another who will need minutes as he looks to book his place in the squad for Euro 2016. Having been linked with Newcastle and Sunderland, he might have to help out a club battling against relegation to do that, though.
VICTOR VALDES (33, goalkeeper) Manchester United
Linked with: Atlas (Mexico), Celta Vigo
The forgotten man, Spanish goalkeeper Valdes has seen precisely zero minutes of action this season after falling out with manager Louis van Gaal. A move failed to materialise in the summer transfer window, so he will try again to escape from his Old Trafford nightmare.
JAMIE VARDY (28, striker) Leicester
Linked with: Chelsea, Manchester United, Real Madrid
"Who wants me?"
Record-breaking goalscorer Vardy has attracted the attention of some big-name clubs after scoring in 11 consecutive Premier League games. It will require a big offer to sign up the England forward from the Foxes.
BENIK AFOBE (22, striker) Wolves
Linked with: Newcastle, Norwich
Afobe's future at Wolves is up in the air with the club unlikely to gain promotion to the Premier League at the end of the season. The frontman has netted 10 goals this campaign and a struggling top-flight side may go in for him for his ability to find the back of the net.
CHARLIE AUSTIN (26, striker) QPR
Linked with: Newcastle, Sunderland
Austin decided to stay with the club after relegation to the Championship and he has a decent return of 10 goals this season. His contract expires in six months and Rangers may cash in, but it may need a bid of £15m to prize the Englishman away from Loftus Road.
TOM BRADSHAW (23, striker) Walsall
Linked with: Birmingham, Brentford, Celtic, Rangers
Walsall's rise up the League One table has owed much to the goalscoring exploits of Bradshaw, who has netted 12 goals in all competitions this season. A man who can find the back of the net is a priceless commodity in football and in Bradshaw's case has inevitably led to reports of a move to a bigger club.
Alex Mowatt (Leeds), Demarai Gray (Birmingham), Charlie Austin (QPR)
Alex Mowatt, Demarai Gray and Charlie Austin have been linked with moves away from their clubs
SAM BYRAM (22, right-back/right-wing) Leeds United
Linked with: Everton, Sunderland
Academy graduate Byram has long been linked with a Premier League move. Transfer talk has followed ever since he won the Whites' player of the year in 2012-13 as a teenager in his debut season. Now, he looks almost certain to move on to the top flight, having rejected a new contract at Elland Road.
MOUSSA DEMBELE (19, striker) Fulham
Linked with: Everton, Manchester United, Tottenham
Not to be confused with the Tottenham midfielder of the same name, this Paris St-Germain product is building his own reputation. Dembele has scored 10 times this term and his pace, strength and finishing have caught the eye.
LEWIS DUNK (24, defender) Brighton
Linked with: Newcastle
The centre-back has been followed by Premier League clubs for some seasons, though none have yet seen enough to take him. Championship side Fulham had a £4m offer turned down in the summer but this January might be different, especially with Newcastle suffering so many problems in defence.
ANDRE GRAY (24, striker) Burnley
Linked with: Aston Villa, Everton, West Ham
Gray was signed by Burnley only last summer in a £9m move from Bristol City, but he has been so impressive at Turf Moor that it could be a short stay for him there. Understandably, Burnley see Gray as vital to their promotion chances and plan to resist.
DEMARAI GRAY (19, winger) Birmingham
Linked with: Bournemouth, Leicester, Sunderland
Gray has star quality. He is quick, tricky and brave, and he won't be playing in the Championship for much longer. Birmingham resisted three bids from Bournemouth for the player last winter. Bournemouth are now desperate to avoid the drop from the Premier League and might go back in again.
ALAN JUDGE (27, midfielder) Brentford
Linked with: Bournemouth, Leicester, Swansea
What verdict will the clubs who have been watching Alan Judge come to in January?
The Republic of Ireland man has been one of his team's best players this season and has been watched by numerous top-flight clubs. His contract expires at the end of next season and while Brentford are keen to renew, Judge may want to try his hand in the Premier League, if a bid comes in.
ALEX MOWATT (20, midfielder) Leeds
Linked with: Newcastle
Mowatt is a clever, left-footed playmaker and with little stability at Leeds these days, a top-flight club may try to prise him away. He is a regular in the Leeds side since making his debut in 2013 and winner of the club's player of the year award last season. Newcastle remain interested.
JORDAN RHODES (25, striker) Blackburn
Linked with: Crystal Palace, Sheffield Wednesday, West Ham
Another transfer window, another potential Rhodes move. Still relatively young and still scoring goals, will a big-money move finally materialise for the Scottish frontman? Sheffield Wednesday were heavily linked with him in the summer and could come in again.
By Shamoon Hafez / BBC Sport: