As is the case every year, the rumour mill has been in overdrive with Manchester United being linked with scores of players from across the globe, something we try to keep track of in our daily Media Watch column.
Of course, that has not stopped some teams confirming deals have been agreed but the window is now actually open and will remain so for 84 days, or two months and 23 days.
The deadline has been set as 23:00 BST on Thursday 1 September.
The Premier League will be off and running long before then, with the top-flight campaign kicking off early, around the weekend of 6/7 August, due to the subsequent interruption caused by the staging of the winter World Cup in Qatar.