Thomas Tuchel has identified Niklas Sule and Dayot Upamecano as his top two transfer targets this summer at Chelsea.
Tuchel will work with the squad he inherited from Frank Lampard for the remainder of the season having opted against making any late January additions.
In the summer though he will look to sign a centre-half capable of taking over from Thiago Silva.
The former PSG man will turn 37 this year and, although his experience has been crucial, he will eventually need replacing.
Sule has been in and out of the Bayern Munich side this term and remains on the Blues radar, reports Bild.
The German has 18 months remaining on his deal but may seek pastures new in search of regular football.
Bayern are resigned to losing David Alaba this summer so may be reluctant to part with more of their defensive options however.
Leipzig’s Upamecano is therefore another target with a host of Europe’s top clubs circling.
The Frenchman has been a leading light for the Bundesliga outfit during their rapid rise.
He will be available in a cut-price deal this summer with his agent conceding that a move is likely.
Volker Struth told Sport1 : “The release clause was agreed because the player decided to want to take the next step at some point. It is very likely in the summer.
“Nothing final has been decided yet. The tendency for him to leave the club in the summer is high.
“The release clause is £38m. That is an insane sum in coronavirus times.
“[Apart from the Bundesliga] only the English league is in consideration. The Spanish clubs that were eligible are currently financially unable to do so.
“It’s no secret that there are two interested parties from the Premier League. A decision will be made and announced in the next few weeks.”