Chelsea have now splashed a league-topping £343.9m this summer following the signing of Midfielder Romeo Lavia from Southampton in a deal worth £58m.
The deal is worth an initial £53m plus £5m in add-ons with the 19-year-old signing a seven-year deal at Stamford Bridge.
The transfer means Chelsea’s first-choice midfield this season will likely be comprised of Lavia, Enzo Fernandez and Moises Caicedo – a trio all desired and bidded for by Chelsea’s rivals, Liverpool.
Lavia becomes the club’s 11th signing of the window, having also signed Moises Caicedo for £115m, alongside Christopher Nkunku, Axel Disasi, Nicolas Jackson, Robert Sanchez, Lesley Ugochukwu, Angelo Gabriel, Ishe Samuels-Smith, Diego Moreira and Alex Matos.
Last season, the Blues splashed a record-breaking £601.7m across both transfer windows on new signings.