*PAUL POGBA (25, midfielder, Manchester United)
Linked with: Juventus, Barcelona, Paris St-Germain.
The biggest name on our list. The world's most expensive player at the time of joining Manchester United from Juventus for £89m in 2016, BBC Sport's gossip column has been packed with reports that Pogba's time at Old Trafford could end for the second time this January.
Dropped from the team in December, including against rivals Liverpool, the France World Cup winner has been of interest to former club Juventus amid reports of a £125m bid, with Barcelona and PSG also said to be circling.
But the departure of manager Jose Mourinho, with whom he had a fractured relationship, has lifted the gloom at Old Trafford and it remains to be seen whether a more liberated role in the side changes circumstances for Pogba or not.
*DANNY DRINKWATER (28, midfielder, Chelsea)
Linked with: West Ham, Fulham.
Premier League winner Drinkwater's move to Chelsea has not gone to plan - he even missed out on their Europa League squad. His only appearance this season came in the Community Shield loss to Manchester City and he has been told by manager Maurizio Sarri he can leave.
The 28-year-old former Leicester player would add some steel in the middle of the park, and a reunion with ex-Foxes boss Claudio Ranieri at Fulham is a possibility.
*GARY CAHILL (33, defender, Chelsea)
Linked with: Arsenal, AC Milan, Aston Villa, Fulham.
Another Chelsea outcast who has failed to break into the team under Maurizio Sarri, Cahill is down the defensive pecking order at Stamford Bridge and has been told he too is free to go.
Possessing plenty of experience on the club and international stage, as well as a healthy looking trophy cabinet, Cahill would not be short of offers from top clubs in the Premier League, Championship and, perhaps more surprisingly, Serie A.
Elsewhere, Bayern Munich have reportedly made a £20m bid for Chelsea teenager Callum Hudson-Odoi, while team-mates Cesc Fabregas, Victor Moses and Andreas Christensen may also be on the way out.
*BRAHIM DIAZ (19, midfielder, Manchester City)
Diaz is out of contract in the summer and is growing frustrated with limited first-team opportunities.
The Spain Under-21 international is one of the country's brightest prospects and may follow in the footsteps of Jadon Sancho by trying his luck outside the Premier League.
Reports in Spain say La Liga giants Real Madrid have agreed a £13.6m deal, with the player to receive £60,000 a week in wages.
*JERMAIN DEFOE (36, striker, Bournemouth)
Linked with: Crystal Palace, Nottingham Forest, Sheffield United, Wigan.
Former England international Defoe has found game time hard to come by this season, playing fewer than 30 minutes in the Premier League.
Seventh on the Premier League's all-time top scorers list with 162 goals, Defoe is a proven finishers and could do a short-term job for a team in need of a striker, despite his advancing years.