Two transfer windows operate each season.

Clubs have been busy since the final kick of last season and some deals have already been agreed, however the first window only officially opens tomorrow (July 1) and closes on August 31, if that's a normal working day. If not, it's the first working day afterwards.

A second transfer window commences at midnight on December 31 and shuts on January 31 if it's a working day, and if not, on the first working day afterwards.

The time of the window shutting on deadline day is determined by the Premier League board.

When does the transfer window open?

The summer transfer window officially opens tomorrow (July 1) and players who are out of contract, such as Frank Lampard and Ashley Cole at Chelsea, will officially become free agents following the expiry of their deals.

When does it close?

QPR manager Harry Redknapp is known for clinching deals at the last-minute and pushing things to the wire. He will have an extra 24 hours this summer as well due to August 31 falling on a Sunday this year, meaning the window will shut a day later on Monday, September 1, 2014.

How much can we expect to see spent?

The 2013 summer window saw clubs spend a record £630million on new players, a figure some 29 per cent higher than the £490million spent the previous year.

Previously, the record high had been £500million splashed in 2008. Given the current television deal and the need for many to compete in the Premier League, expect similar figures - if not higher.

How can I keep up to date with the latest comings and goings?

Get West London will be running a rolling transfer blog in the run up to the frenzy of transfer deadline day on Monday, September 1, 2014.

This blog will feature all the latest gossip, transfer rumours and confirmation of signings throughout the summer window.

We will keep you informed of all the developments that matter to you until Big Ben signals the closure of another year's business.