#4 Isco (Real Madrid)

Isco's relationship with new Madrid boss, Santiago Solari, has been deteriorating rapidly in recent months and has resulted in the midfielder dropping to the bench. His game time is very low compared to previous seasons, which has meant that Isco has become very unhappy at the Bernabeu.
Clubs have picked up on the fact that he's unsettled, and have already drawn up plans to make a move for him in January. However, trying to prise a player of his caliber away from Real Madrid will be difficult, especially given how important he really is to the side - whether Solari wishes to admit it or not.
Isco has only featured in 11 games in LaLiga so far, which is a far cry from the standard 30 or more matches he would typically play in each season previously.
Rumour probability: 7/10
The Metro have reported that Chelsea will submit a £70m bid to sign Isco from Real Madrid next month. With Manchester City, Arsenal and Manchester United also interested in the Spaniard, things could heat up very quickly. While City might be the frontrunners due to their vast wealth, Chelsea could be a more ideal place to settle down than Manchester.