The summer transfer window is officially open for English clubs with June 15th commencing the period for business.

Though several deals have already been finalised, includingTottenham Hotspur's additions of free agents Andy Robertson and Marcos Senesi, the window is now formally open for English clubs.

Some huge deals are expected this summer.Manchester City are pursuing Nottingham Forest midfielder Elliot Anderson in a deal which could break the British transfer record, while Manchester United are finalising the transfer of Brazil international Ederson.

Premier League clubs spent a record £3 billion last summer and heavy investment is expected again across the division.

When does the transfer window open for Europe's top leagues?

Alongside England and thePremier League, France's Ligue 1 clubs can officially start their transfer business from Monday June 15th. However, the summer window will open later for leagues across the continent.

The Women's Super League transfer window will open on Tuesday June 16th.

Serie A (Italy) will open its transfer window on June 29th, while for clubs in La Liga (Spain) and the Bundesliga (Germany) the official opening is July 1st.

When does the transfer window close for Europe's top leagues?

Despite different opening dates, the European transfer windows will close on the same day. All five major leagues will close for business on Tuesday September 1st, at varying times.

The transfer window deadlines are as followed.

The Women's Super League transfer window will shut at 11pm on Thursday September 3rd. Several foreign markets will close at a later date.

Turkey (September 4th) and the Saudi Pro League (October 12th) are two prominent divisions whose windows are open later than the top-five European league deadline.