Chelsea are aiming to complete a £125million hat-trick of transfer deals for Tiemoue Bakayoko, Antonio Rudgier and Alex Sandro, who could become the club’s record signing.

With a £35m deal for midfielder Monaco midfielder Bakayoko still being finalised, Chelsea have agreed to sign Rudiger for £30m from Roma and will step up negotiations with Juventus for £60m-rated Sandro at the beginning of next week.

Chelsea will also announce the free transfer signing of Willy Caballero to act as deputy to first-choice goalkeeper Thibaut Courtois now that his Manchester City contract has expired.

There is optimism Chelsea’s pursuit of Sandro, who Paris Saint-Germain are also interested in, could take a significant step forwards next week. With Juventus adamant he will not be sold for less than £60m, Chelsea will have to break their transfer record, which stands at £50m for Fernando Torres in 2011, to get the 26-year-old.

Chelsea have already banked around £62m from the sales of Juan Cuadrado, Asmir Begovic, Christian Atsu, Bertrand Traore and Nathan Ake this summer, and are now working hard to spend big.