Chelsea were crowned the champions of the world in July, recording a stunning 3-0 victory over European champions Paris Saint-Germain in the final of the 2025 Club World Cup.
The Blues have spent in excess of £100m to get deals for Joao Pedro and Jamie Gittens over the line in recent weeks, and both could be vital for the club during the 2025-26 campaign.
Meanwhile, funds have been raised through the sale of Kepa Arrizabalaga to Arsenal, Chelsea also benefitting from getting the Spanish goalkeeper's wages off their outgoings.
There has also been a major sale in the final third of the field, with Noni Madueke making the switch to Arsenal, while Djordje Petrovic has been sold to Bournemouth in a £25m deal.
Chelsea have spent in excess of £200m this summer, but they have actually raised almost £100m through player sales.
The team's success at the Club World Cup earned them a significant amount of money, and their summer spending is far from finished, as head coach Enzo Maresca looks to put together a squad capable of challenging on all fronts.
Indeed, the Blues are currently working on a deal for Ajax's Jorrel Hato, while RB Leipzig's Xavi Simons and Manchester United's Alejandro Garnacho are both options in the final third of the field.
Chelsea are currently working towards their 2025-26 Premier League opener, with Crystal Palace the team's opponents on the first weekend of the new campaign.
Here, Sports Mole rounds up every new signing and departure from Chelsea's 2025 summer transfer window.
Chelsea confirmed transfers in: Summer 2025
Willian Estevao (£28.7m, Palmeiras)
Dario Essugo (£18.8m, Sporting Lisbon)
Kendry Paez (£8.4m, Independiente del Valle)
Liam Delap (£30m, Ipswich Town)
Mamadou Sarr (£12m, Strasbourg)
Joao Pedro (£60m, Brighton & Hove Albion)
Jamie Bynoe-Gittens (£48.5m from Borussia Dortmund)
Chelsea confirmed transfers out: Summer 2025
Bashir Humphreys (£10m to Burnley)
Jadon Sancho (end of loan from Manchester United)
Marcus Bettinelli (Undisclosed to Manchester City)
Lucas Bergstrom (Free to Mallorca)
Teddy Sharman-Lowe (loan to Bolton Wanderers)
Kepa Arrizabalaga (£5m to Arsenal)
Mathis Amougou (undisclosed to Strasbourg)
Zak Sturge (undisclosed to Millwall)
Djordje Petrovic (£25m to Bournemouth)
Noni Madueke (£48.5m to Arsenal)
Caleb Wiley (loan to Watford)
How much have Chelsea spent and earned during the summer 2025 transfer window?
Chelsea total spend summer 2025: £206.4m
Chelsea total income summer 2025: £88.5m
Chelsea total net profit/loss summer 2025: -£117.9m
Latest Chelsea transfer rumours
You can find a complete list of the latest Chelsea transfer rumours by clicking here.
Chelsea squad
You can view Chelsea's current squad ahead of the 2025-26 season by clicking here.