#4 Saul Niguez (Atletico Madrid)
Saul Niguez is another star whose name has been scattered everywhere in recent months; he's been linked to virtually every high-profile club in Europe, but has stayed loyal to Atletico Madrid up to this point. Could January be the window he finally makes the switch?
For a while, it seemed as if a move to the Premier League was inevitable back in the summer, with teams like Chelsea, Manchester City and Manchester United all vying for his signature, but he stayed put, and those teams were left empty-handed. But with January fast approaching, there's no doubt that these clubs will go all-out to ensure that they don't lose him again.
Rumour probability: 7/10
If Barcelona want their man, they'll need to match his release clause of £134m. It's an eye-watering figure to most, but there's no doubt that Barca have the money available - it's just a case of whether they can be sure that the deal will pay off. It's a huge gamble, even if Saul is one of the best players in Spain right now.
The Express confirmed that Barcelona would get their man if they meet his release clause, so what's stopping them?