The window may not open for a while yet, but the transfer news and speculation about possible deals does not show any signs of slowing down.
Here are the latest updates about some potential big summer moves that could go down.
Paul Pogba
Jose Mourinho is reportedly willing to allow Paul Pogba to leave Old Trafford this summer. The £89m midfielder has been inconsistent since his arrival at Manchester United.
Anthony Martial, Daley Blind, Matteo Darmian
As well as Pogba, the same reports suggest Mourinho also wants to sell Anthony Martial, Daley Blind and Matteo Darmian. This could form part of an extensive summer clear out for United.
Jorginho
With an apparent £200m to spend this summer, Pep Guardiola is looking to rival Liverpool for the signing of Jorginho. The Napoli midfielder has been heavily linked with a move away from Italy.
Mousa Dembele
Mauricio Pochettino is willing to let Mousa Dembele leave this summer and will listen to offers for the Belgian midfielder. Spurs have identified two replacements for the 30-year-old.
Harry Maguire
Harry Maguire could be set to attract big interest this transfer window. The Leicester City defender, who moved from Hull City, is thought to be the subject of interest from Manchester City, Manchester United, Arsenal and Tottenham.
Jack Grealish
After an impressive season in the Championship, Leicester City look set to pursue a deal for the 22-year-old midfielder. Any move could depend on whether Aston Villa get promoted or not.
Benik Afobe, Willy Boly
After securing promotion to the Premier League, Wolves want to make the loan deals of Benik Afobe and Willy Boly permanent. It could cost them £20m.