The summer transfer window has reopened after closing for five days. Here, we explain why there are two transfer windows this summer and look at some of the deals done so far.
When does the window reopen?
The summer transfer window reopened on Monday, and will remain active until Monday 1 September at 19:00 BST, a slightly earlier time than the traditional 23:00 BST closing time that has been used previously.
Teams participating in the FIFA Club World Cup who sign players from Monday 16 June can register them for the knockout stages of the competition.
Why did it close?
The reason for this unusual, two-part window, is the Club World Cup - which began this weekend in America.
To accommodate clubs wanting to sign players ahead of that tournament, the transfer window opened early, on Sunday 1 June, for an exceptional registration period.
But because FIFA's rules stipulate the transfer windows in a calendar year when combined cannot be greater than 16 weeks, a break had to be inserted.
Therefore the summer's first window closed on Tuesday 10 June at 19:00 BST.
The initial 10-day period applied only to the 20 national associations with teams playing in the Club World Cup to allow them to register players for the group stages of the competition. These associations include England, with Manchester City and Chelsea both participating in the tournament.
The special early opening allowed Trent Alexander-Arnold to leave Liverpool in time to feature for Real Madrid in the competition. The Spanish club also signed centre-back Dean Huijsen from AFC Bournemouth.
While Man City and Chelsea are the only English clubs participating in the Club World Cup, all Premier League teams were able to sign players during the special period from 1 to 10 June.
Which deals have been done in the first window?
A number of Premier League clubs took advantage of the early window to bring in new players.
Manchester United completed their first signing of the summer by bringing in Matheus Cunha from Wolverhampton Wanderers.
Liverpool, meanwhile, signed right-back Jeremie Frimpong from Bundesliga side Bayer Leverkusen.
Chelsea acquired striker Liam Delap from Ipswich Town, as well as defender Mamadou Sarr.
Man City bolstered their squad for the Club World Cup by acquiring left-back Rayan Ait-Nouri from Wolves, AC Milan midfielder Tijjani Reijnders and Rayan Cherki from Lyon.