With the window officially open, we take a look at five of the biggest transfer rumours doing the rounds.
Read: Five Biggest Transfers Of The Window So Far
Sergio Ramos To Leave Real Madrid For Manchester United
The Real star has been heavily linked with the Red Devils, but it remains uncertain whether Ramos is genuinely seeking a transfer away. While the defender has remained tight-lipped, some reports suggest he has asked to leave, while others say that he wants to stay in Spain.
Paul Pogba To Barcelona Or Real Madrid
There has been a lot of interest from Europe's giant clubs, but it is unknown where Pogba wishes to go, and if he will even leave Juventus at all. It's been said that Barcelona are favourites to sign the star, although Real are also keen on his services.
Iker Casillas Yohan Cabaye To Crystal Palace
As Alan Pardew looks to strengthen his Palace side ahead of next season, it's being said that he may strike lucky with high-profile signings in Paris Saint-Germain's Yohan Cabaye and Real Madrid's Iker Casillas.
Zlatan Ibrahimovic To English Premier League
The Swede has never before played in England, but that may change as his PSG future seems in doubt. Ibrahimovic has commented on the prospect of leaving the club, as he's been linked strongly with Chelsea and Liverpool.
Juventus To Swoop For Isco Oscar
The Italian club's boss, Massimo Allegri, recently named a few players on his transfer radar, saying that he is interested in Chelsea's Oscar and Real Madrid's Isco. No official bids have been made by Juventus, and apparently Mourinho has said that he wants Oscar to stay in England.
Read: Latest Five Stars That Could Leave Barca
What transfers would you like to see happen in this window? Let us know in the comments section below.