The fortunes of the Premier League’s 2026-27 season will change dramatically this summer as 20 teams buy, sell, and loan players to prepare for their 38-match odyssey.

MORE — Premier League transfers: What you missed during World Cup

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While January business has become more regular, summer is still the busiest time to shape a Premier League roster.

MORE — Completed Premier League transfers, Summer 2026

With eight new managers in the Premier League and several more coming aboard in the second half of the 2025-26 season, this is a huge chance for bosses to shape teams in their image.

When did the Premier League summer transfer window open?

Transfer activity aside from free transfers began to be formalized on Monday, June 15, 2026.

When is Deadline Day for the Premier League summer transfer window?

Transfer activity must be concluded by 6pm ET on Tuesday, September 1, 2026.

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Well, they have to at least be agreed upon by a couple of hours before that time.

Let’s explain.

What is a Premier League deal sheet? What are the deal sheet rules?

Deal sheets are allowed prior to the deadline in order to formalize moves that were agreed prior to the deadline without the appropriate time to dot t’s and cross i’s.

According to premierleague.com:

“The deal sheet allows a club to confirm that a deal has been reached in order to allow for additional time to submit the remaining documentation.

“For a deadline of 23:00, the deal sheet cannot be used before 21:00 and needs to arrive fully completed before the transfer window closes.

“Once the sheet arrives, clubs have got another two hours, or until 01:00, in which to submit the full paperwork.”