Manchester City have completed the standout piece of transfer business thus far in the January market, bringing in Antoine Semenyo from Bournemouth in a £65m deal.
Semenyo's marquee move to the Etihad Stadium has triggered the exit of Oscar Bobb, with the Norwegian joining Fulham in a £27m deal.
Pep Guardiola's side have also boosted their defence with the arrival of Marc Guehi from Crystal Palace - the centre-back moving to Manchester in a £20m transfer.
Guehi looked certain to be heading for Liverpool last summer before a move broke down at the final moment, while Arsenal had also expressed an interest in his signature this month before the Citizens were able to get the deal done.
Although it has been relatively quiet elsewhere in the Premier League, there has still been notable movement: Brennan Johnson has joined Crystal Palace, Conor Gallagher has signed for Tottenham Hotspur, Tammy Abraham has returned to Aston Villa and West Ham United have been busy, bringing in Valentin Castellanos and Adama Traore, while Lucas Paqueta has departed.
Still, there could yet be some eye-catching deals before the transfer window closes.
Indeed, Manchester United are believed to be considering entering the market to boost their top-four challenge, with a new central midfielder potentially arriving.
There could also be space to move for a new forward if Joshua Zirkzee leaves, as Roma and Juventus continue to be credited with an interest in the Netherlands international.
Here, Sports Mole runs through everything you need to know about the January transfer window, including the much-anticipated deadline day.
When did the 2026 winter transfer window open and when does it close?
The 2026 winter transfer window officially opened for business at midnight on Thursday, January 1, and clubs have just over a month to either bolster their ranks or trim their wage bills.
The market will slam shut at 7pm GMT on Monday, February 2, but clubs should be granted an additional two hours to get signings over the line if they have submitted deal sheets to the Premier League in time.
Why is transfer deadline day in February, not January?
The 2026 winter transfer window closes in early February due to the last day of January - the 31st - falling on a Saturday.
When is January transfer deadline day across Europe?
In all of England, Scotland, France, Spain, Italy, Germany and the Netherlands, transfer deadline day also falls on February 2.
However, the window shuts one day later in Portugal, while teams in Greece and Turkey can still sign players until Friday, February 6.
What are the biggest deals that could be done in the January transfer window?
Man United, as mentioned, could be active before the window closes, with Besiktas' Wilfred Ndidi and AC Milan's Loftus-Cheek potential targets.
Al-Hilal's Ruben Neves was also linked with a move to Old Trafford, but fresh reports have indicated that the Portugal international could sign a long-term extension with the club.
Chelsea, as always, are in the market for players, and Jeremy Jacquet is the marquee deal pursued by the club ahead of the window closing; however, Liverpool and Bayern are also believed to be keen on the talented centre-back.
Jean-Philippe Mateta is also pushing to leave Crystal Palace, and AC Milan are credited with serious interest after having reportedly agreed personal terms with the Frenchman.