You might wonder why the deadline has been brought forward to 7pm from 11pm or midnight in previous years.
Well, it is because each of the major European leagues have decided to harmonise their deadlines. That means the transfer window will close at the same time in the Bundesliga, Serie A, La Liga and Ligue 1.
There are a handful of other countries whose windows stay open longer, including Turkey.
Deals that aren’t quite done by 7pm on Monday can still be completed as Premier League clubs are allowed a two-hour grace period if they submitted a deal sheet before the deadline.