Chelsea have been warned over Jules Kounde's height as the Blues prepare to make an official offer to Sevilla. football.london understands that Chelsea are ready to launch bids for both Kounde and Paris Saint-Germain defender Presnel Kimpembe.
The Blues confirmed the signing of Kalidou Koulibaly from Napoli last week in what was the club's first defensive addition of the summer transfer window. Despite the Senegal defender coming to Stamford Bridge, Thomas Tuchel still wants to bring another two centre-backs to the club.
Matthijs de Ligt looks set to sign for Bayern Munich despite interest from Chelsea, while Nathan Ake is expected to stay with Manchester City. Kounde and Kimpembe, both France internationals, have now been identified as the men to bolster Tuchel's defensive options.